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The Captain's Secret Desire

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castle tv series fanfic kate beckett nypd captain lately is obsessed with big black cock and ask her husband rick castle to find her black lover .rick says he would handle it and he the guy his old friendmonroe bradford 45 old african american who loves to fuck white wives

Chapter 4: Double Blackmail

The words didn’t stop when the fucking did. They bled out of Rick in a steady, toxic drip, filling his laptop screen late into the night and then again in the cold, silent dawn after Kate left for work. He wrote in the study, the door locked, a bottle of Glenfiddich at his elbow. He documented everything. The feel of the leather chair under him. The specific cadence of Monroe’s grunts. The exact shade of purple on Kate’s neck the next morning. He wrote it clinically, dispassionately, a forensic report on the death of his marriage. The act of writing was the only thing that made the reality feel containable, as if by pinning the images to the page he could prevent them from chewing through the rest of his mind.

Three days passed in a disjointed blur. Kate moved through the apartment like a beautiful ghost, speaking to him only in necessities. “Laundry’s done.” “We’re out of milk.” Her phone, which she once kept face-down, now stayed screen-up on the kitchen island, buzzing with notifications he couldn’t read but could guess the source of. The distance between them was no longer an empty space; it was a solid, cold wall, and she was the mason, brick by brick.

On the fourth evening, she came home with two shopping bags. He watched from the study doorway as she unpacked them on the living room sofa: new lingerie, black lace even more intricate than the last, a bottle of wine he didn’t recognize, and—his stomach tightened—a box of condoms, extra large. She arranged them almost deliberately, a curator displaying artifacts for an upcoming exhibit.

“He’s coming tonight,” she said without looking up. “Late. After midnight.”

Rick’s throat was dry. “Okay.”

“And…” She finally met his eyes. Her gaze was flat, devoid of its old warmth, but glittering with a strange, fierce challenge. “He’s bringing a friend.”

The words hung in the air, thick and incomprehensible. “A… friend?”

“His brother. Jamal.” She said the name with a casualness that was utterly deranged. “He’s visiting from D.C. Monroe thought it would be… fun.”

Rick felt the floor tilt. “Fun.” The word was a dead thing in his mouth.

“You don’t have to watch,” she said, echoing her old offer, but the meaning had inverted. It was no longer a kindness; it was a taunt. A test of his complicity’s outer limit.

“Where would I go?” he replied, the old, defeated refrain.

This time, she smiled. It was a small, cold curve of her lips. “Exactly.”

She took her purchases to the bedroom. He didn’t move. The apartment felt like a pressure cooker, the air itself vibrating with a sick anticipation. He poured a whiskey, drank it, poured another. He tried to watch television, but the images were meaningless noise. At eleven-thirty, he walked to the bedroom. He didn’t sit in the chair. He stood by the window, looking out at the indifferent city, his reflection a pale, haunted outline against the dark glass.

The chime of the elevator at 12:15 was like a gunshot. Voices echoed in the foyer—Monroe’s deep laugh and another, younger, lighter one. They sounded like men arriving at a party. The bedroom door opened.

Monroe entered first, dressed in dark jeans and a leather jacket. His eyes found Rick immediately, flashing with amusement. Right behind him was Jamal. He was indeed Monroe’s brother—the same strong jaw, same confident set to the shoulders—but taller, broader, younger by a good ten years. He had a basketball player’s build, all long limbs and coiled power, and a face that was handsome in a less refined, more aggressively sensual way. His gaze swept the room, landing on Rick with naked, appraising curiosity.

“Rick Castle,” Monroe said, a hint of mockery in the formal address. “This is my brother, Jamal.”

Jamal nodded, a quick, chin-lift gesture. “Hey. Heard a lot about you.” His voice was a smooth baritone. He didn’t offer a hand.

“All good, I hope,” Rick said, the writer’s autopilot engaged, producing polite nonsense.

Jamal’s smile was all teeth. “Oh, for sure.”

Kate emerged from the ensuite then, wearing the new lingerie. It was a harness-like thing of straps and sheer panels, leaving very little to the imagination. She had taken her hair down. She looked directly at Monroe, then at Jamal, a slow, assessing look passing between them all. No one looked at Rick.

“You’re even prettier in person, Kate,” Jamal said, his voice dropping an octave.

“Thanks,” she said, a real smile touching her lips. It was a smile Rick hadn’t seen in months. “Can I get you guys a drink?”

“Nah,” Monroe said, shrugging off his jacket. “We’re good.” He reached out and hooked a finger in the front strap of her lingerie, pulling her gently towards him. “We’re all just gonna get to know each other real well.”

Jamal chuckled, a low, easy sound. He was already pulling his shirt over his head, revealing a torso of sculpted muscle. “Man said you had a situation needed handling. I’m always happy to lend a hand.”

Monroe kissed Kate, deep and hungry, his hands cupping her ass. Jamal watched, unbuttoning his jeans, his eyes dark with intent. Rick felt invisible, a piece of the room’s furniture.

“On the bed, baby,” Monroe murmured against her mouth. “Show Jamal what you’ve been learning.”

Kate climbed onto the bed, moving to the center on her knees. She looked back over her shoulder, her eyes skipping past Rick to lock onto Jamal. There was a raw hunger in her expression that made Rick’s heart clench. It was the look she used to give him, once, a lifetime ago.

Jamal kicked his jeans and boxers off. His erection sprang free, thick and impressively long, a shade darker than Monroe’s. He stroked it slowly, his gaze devouring Kate. “Damn, Monroe. You didn’t oversell it.”

“Never do,” Monroe said, stripping off his own clothes. He moved behind Kate, his hands running up her thighs. “Get over here. Let’s give our audience a proper show.”

Jamal joined them on the bed, kneeling before Kate. He didn’t kiss her. He took her face in his hands, tilted it up, and simply stared at her for a long moment. “You know what you’re in for, right, girl?”

She nodded, her breath coming faster. “Yes.”

“Say it.”

“I’m in for it. All of it.”

Jamal grinned, a feral flash. “Good answer.” He leaned in and kissed her, a claim staking. It was rougher than Monroe’s, all possession and teeth. Kate moaned into his mouth, her hands coming up to claw at his shoulders.

Monroe watched for a beat, then positioned himself behind her. He spat into his palm, slicked himself, and without preamble, pushed into her from behind. Kate cried out, the sound muffled by Jamal’s mouth, her body arching back onto Monroe’s cock.

Rick’s own breath hitched. He was hard, a traitorous, shameful ache in his boxers. He didn’t touch himself. He just watched, a prisoner forced to witness his own execution.

Monroe established a deep, rocking rhythm, his hands tight on her hips. Jamal broke the kiss, trailing his mouth down her neck, over the lace covering her breasts. He bit down on her nipple through the fabric, making her yelp. “This shit is in the way,” he growled, and with a quick, violent motion, he ripped the front of the lingerie open. The fragile lace tore with a sound like a gasp.

He took her bare breast into his mouth, sucking hard, his free hand pinching and twisting her other nipple. Kate was writhing between them, caught in a crossfire of sensation, her cries becoming ragged, continuous sounds.

“Think she can take you, too?” Monroe grunted, his thrusts gaining force. “Think our little white queen’s ready for two kings?”

Jamal pulled his mouth from her breast with a pop. “Only one way to find out.” He moved back, positioning himself. He spat into his own hand, then rubbed the wetness over Kate’s asshole. She gasped, a sharp, shocked sound.

“Relax,” Jamal murmured, but it wasn’t a suggestion. It was a command. He pressed the broad head of his cock against her tight, resistant opening. “Gonna stretch this pretty little hole out just for me.”

He pushed.

Kate screamed. A raw, shredded sound of pain and overwhelming sensation. Her body went rigid, caught between Monroe’s deep penetration and Jamal’s brutal invasion. Jamal worked himself inward with short, persistent thrusts, his face a mask of intense concentration and pleasure.

“Fuck, she’s tight,” he hissed, sinking another inch.

Monroe chuckled, never missing a stroke. “Told you. Pure fire.”

Rick was trembling. He could see the strain in Kate’s body, the impossible fullness, the way she was being split open. Jamal finally buried himself to the hilt, his low groan joining the symphony of grunts and wet slaps. They were both inside her now, a devastating, primal intrusion.

For a moment, they were still, a obscene statue of conquered flesh. Then Monroe moved. Then Jamal moved. They found a rhythm, a counterpoint, one pushing in as the other pulled out, a ceaseless, rolling assault. The bed groaned in protest. The air was thick with the sounds of them: skin slapping skin, guttural curses, Kate’s choked, sobbing whimpers that were not pleas for mercy but mantras of abandon.

“Whose pussy is this?” Monroe demanded, his voice ragged.

“Yours!” she wailed.

“And whose ass?”

Jamal answered, driving into her harder. “Mine. This tight little ass is fucking mine.”

They fucked her with a punishing, synchronized intensity. Kate was beyond words, a vessel of pure sensation, her body jerking and convulsing between them. Her hands were fisted in the sheets, her knuckles white. Spit slicked her chin. Tears streaked her temples.

Rick’s hand moved of its own volition, into his boxers. He took his own cock in his hand, stroking it in time with their thrusts. The shame was a secondary burn, drowned out by the visceral, horrifying arousal. He was a part of this now, complicit not just by presence but by participation.

Monroe saw him. Saw his hand moving under his clothes. A cruel, triumphant smile spread across his sweaty face. “Look at that, Jamal. The writer’s joining the party.”

Jamal glanced over, his rhythm never faltering. “Pathetic,” he grunted, but there was approval in it.

“No,” Monroe panted, his hips pistoning. “It’s right. He needs to see. Needs to understand what she really is. What she really needs.” He leaned over Kate’s back, his mouth close to her ear. “Tell him, Kate. Tell him what this is.”

She turned her head, her eyes, glazed and unfocused, finding Rick’s. Her voice was broken, barely audible over the sounds of the men using her body. “It’s… real,” she gasped. “This… is real. You were… just a story.”

The words were the final blow. They hollowed him out. He came suddenly, violently, into his own hand, a silent, spastic shudder as he watched his wife being fucked by two other men. His orgasm was joyless, a mechanical spasm of release that left him emptier than before.

A moment later, Kate screamed, a sound that seemed to tear something inside her throat. Her body locked, shaking violently as she was pushed over the edge. Monroe swore, slamming into her one last time with a roar, his release triggering Jamal’s, who buried his face in her neck and growled like an animal as he pulsed inside her.

They collapsed in a heap of slick, heaving limbs, a tangle of satisfaction and exhaustion. The room stank of sex and sweat and a brutal kind of victory.

Slowly, the brothers disentangled themselves. Jamal got off the bed first, stretching his long body with a groan of satisfaction. He looked at Rick, at the obvious stain on Rick’s boxers, and shook his head with a disdainful chuckle. Monroe pulled out of Kate more gently, then helped Jamal slide out of her. Kate whimpered at the dual withdrawal, a vast emptiness left in the wake of their possession. She curled onto her side, trembling, her body marked and glistening.

Monroe stood, looking down at her with an almost paternal pride. He glanced at Rick. “You got something to clean her up with?”

Wordlessly, Rick went to the bathroom. His legs were weak. He brought back a warm, wet cloth. He didn’t approach the bed. He held it out. Monroe took it, not thank you, and tended to Kate with a rough tenderness. Jamal dressed quickly, lithely.

“Good times,” Jamal said, slapping his brother on the back. “I see why you keep her around.”

Monroe finished cleaning Kate, dropped the cloth on the floor. “Told you.” He leaned down, kissed Kate’s sweaty forehead. “We’ll see you next week, baby. Maybe hit that club downtown, give you a real taste of the scene.”

Kate nodded weakly, her eyes already closing.

The brothers left together, their low conversation and laughter fading down the hall. The front door clicked shut.

Silence rushed back in, louder than any sound before.

Rick stood in the middle of the room. Kate was already asleep, or pretending to be, her breath slowing into an uneven rhythm. The room was a war zone: the torn lingerie on the floor, the sheets damp and stained, the scent of other men permeating everything.

He walked to his laptop, still open on the desk in the corner. His earlier words stared back at him. They were inadequate. Pale ghosts of the reality. He sat down, his soiled boxers clinging to him. His fingers found the keys. He began to type, describing Jamal’s height, the way the light caught the sweat on Monroe’s back, the exact sound Kate made when he entered her ass. He wrote about his own hand moving under cotton, his own shameful, silent climax as a spectator.

He wrote about his own hand moving under cotton, his own shameful, silent climax as a spectator. The words were a cage, and he locked himself inside it each night, the clicking keys the only sound in the study besides the ice melting in his glass. Days blurred into a miserable continuum. Kate moved through the apartment with a new, unsettling serenity. The frantic energy was gone, replaced by a calm so deep it felt like oblivion. She hummed sometimes. She’d left the torn lingerie in a small, black heap on her dresser for a week before finally tossing it.

A text came on a Tuesday afternoon. It was Monroe, but not to Kate. To Rick. Finished that thing you sent. Powerful stuff. We should talk.

Rick’s blood went cold. He’d emailed a disguised excerpt days ago in a drunken, masochistic fog, a passage where “Mark” watched “Lena” with “the brothers.” He’d used a throwaway account. He never expected a reply. His fingers trembled as he typed. Talk about what?

The next scene, came the immediate reply. I have ideas. My place. Thursday. 8pm. Come alone.

Rick stared at the words. The next scene. It was no longer his fiction. It was their shared project. He knew he wouldn’t tell Kate. This was a new lane, a secret tunnel paralleling the main descent. He replied OK before he could think.

Monroe’s apartment was a minimalist loft in Tribeca, all exposed brick and cold steel. It smelled of sandalwood and money. Monroe opened the door holding a highball glass, dressed in slim sweatpants and a tight t-shirt. “Castle. Come in. Drink?”

“Sure.” Rick’s voice sounded thin in the vast space.

Monroe poured him two fingers of bourbon from a crystal decanter, no ice.

He handed it over, their fingers brushing. The glass was cool. "You write it well," Monroe said, walking to a large steel-framed window overlooking the Hudson. "The watching. The jealousy. The little details. The way her mouth goes slack right before she comes."

Rick sipped the bourbon. It was smooth, expensive, a world away from his own whiskey. "It's just observation."

"It's more than that." Monroe turned, leaning against the glass. "It's hungry. You're not just watching. You're consuming it. That's why you sent it to me."

"I didn't mean to."

"You did." Monroe's smile was knowing. "You want in. Not as a fucking spectator in a chair. You want to know what it feels like from the inside."

The bourbon burned a path to Rick's stomach. "That's not true."

"It's all over those pages. That's not a writer describing a scene. It's a man trying to fuck his wife through his sentences." Monroe pushed off the window and moved closer. "She asks about you, you know. After. When she's lying there, wrecked. She asks what you did. If you were turned on."

Rick couldn't speak.

"I tell her yes." Monroe stopped a foot away. "I tell her you jerked your little writer's dick raw in the corner. She gets wet all over again when I say that. You’re part of the kick for her now, Rick. A necessary piece of the humiliation. Your pain is the finish on the fucking polish."

"You're sick."

"We're all sick. You just haven't admitted your strain yet." Monroe took a slow drink, his eyes never leaving Rick's. "Thursday. My place again. But not just you. Her, too."

"No."

"Yes." Monroe’s voice was flat, final. "You're going to tell her you have a meeting with your editor. You're going to bring her here. And you're not going to watch from a chair."

"You want me to... what? Join in?" The laugh that came out was brittle, cracked.

"I want you to learn." Monroe set his glass down on a concrete slab table. "I want you to see what it takes to really fill her up. You can’t write what you don’t understand."

"This isn't a research trip."

"Everything’s research for you, isn't it?" Monroe stepped into Rick's space. He smelled like clean cotton and assertive musk. "This is the next chapter. Be here at nine. Or don't. But if you don't, this ends. I stop seeing her. And you're left with whatever broken pieces of her I haven't already taken with me. Think she’ll love you then? After tasting this?"

He walked to the door, opened it. The dismissal was absolute.

Rick’s drive home was a blur of streetlights and tunneling vision. He told Kate about the fake editor meeting over a silent dinner of delivered pasta. She nodded, swirling her wine. "Okay. I'll be at the precinct late anyway. A case is heating up."

He almost confessed then. The words piled up behind his teeth. But he saw the way her neck tilted, the faint, fading yellow of a bruise just above her collar. He said nothing.

Thursday night, she wore a simple charcoal dress, her hair in a severe ponytail. Professional. Unaware. "Good luck with the editor," she said at the door, giving him a peck on the cheek that tasted of mint and distance.

He stood in Monroe’s loft at 8:58, his heart a frantic animal in a cage of bone. Monroe let him in. He was barefoot, wearing jeans and nothing else. "She's in the bedroom," he said, as if discussing the weather.

"Monroe, I can't—"

"You can. You will." Monroe gripped his shoulder, his hand heavy and warm. "You sent me those words. These are the consequences."

He guided Rick down a short hall, pushed open a door. The room was dominated by a low, wide platform bed. Kate was on it, on her back. Her dress was bunched around her waist. Her legs were spread. Jamal knelt between them, his head buried between her thighs, his hands pinning her hips down. Her fingers were tangled in his short, tight curls. Her eyes were closed, her mouth a perfect ‘O’ of silent pleasure.

She hadn’t heard them enter over the wet, rhythmic sounds of Jamal’s mouth working on her.

Monroe leaned close to Rick’s ear, his voice a hot, quiet murmur. "See? She doesn't need a writer. She needs a mechanic. Someone who knows how to work the machinery."

Jamal lifted his head, his chin glistening. He saw them, grinned. "Hey, man. 'Bout time. She's all warmed up."

Kate’s eyes flew open. They locked onto Rick. Confusion flashed, then shock, then a slow, dawning horror that melted, terrifyingly, into something else. A dark, shameful flicker of excitement. "Rick?" Her voice was thin.

"You're both here to learn," Monroe said, walking to the bed. He unbuckled his jeans. "Rick, come here. Stand right there. Where she can see you."

Rick’s feet carried him forward. He stood at the bedside, looking down at his wife’s exposed body, at Jamal’s grinning face, at Monroe’s deliberate, unhurried undressing.

Monroe freed his cock, already hard. He nodded to Jamal. "Flip her over. On her hands and knees."

Jamal manhandled Kate effortlessly, turning her so she faced Rick, her ass in the air. Monroe positioned himself behind her. He spat into his palm, slicked himself, and pressed the head against her. "Watch your husband's face, Kate. I want you to see it when I go in."

He shoved forward. Kate gasped, her eyes widening, fixed on Rick as Monroe filled her. Her knuckles were white where she gripped the duvet. Monroe fucked her with slow, deep, possessive strokes, each one making her body jolt.

"Now you, writer," Monroe grunted, his rhythm steady. "Touch her. You wanted to know what it feels like? Start with her mouth."

Jamal moved to the side, giving Rick space. Kate’s eyes were pleading and furious. Rick reached out, his hand trembling. He cupped her cheek. Her skin was fever-hot. She turned her face into his palm, her lips parting. A tear tracked through his fingers.

"Use your cock," Monroe corrected, his voice tight with strain. "She doesn't need your hand. She needs to be full. She needs to be used. Jamal, guide him."

Jamal moved behind Rick, a disconcerting presence. He unzipped Rick’s trousers, pushed them down. Rick was half-hard, shamed into a pathetic semi-arousal. Jamal took Rick’s cock in a firm, impersonal grip, stroked him to full, rigid hardness. The humiliation was absolute.

"Now," Jamal said, steering Rick by the hip. "Her mouth. Make her take it."

Rick stood before Kate’s face. Her breath hitched. Monroe was pounding into her from behind, the impacts shaking her whole body. "Open up, baby," Monroe commanded. "Take your husband. Let’s see you service both of us."

A broken sob escaped her, but her lips parted. Rick, moving as if in a nightmare, guided himself between them. He pushed into the wet heat of her mouth. She gagged, her eyes watering, but Monroe’s thrusts pushed her forward, forcing her to take Rick deeper.

"Fuck her face," Jamal whispered in Rick’s ear, his hand still on Rick's hip. "Don’t be gentle. She’s not a fucking princess tonight."

Rick began to move. The sensation was overwhelming, grotesque, electrifying. He was fucking his wife’s mouth while another man fucked her from behind. Her choked gags vibrated through him. Spit slicked his length. Monroe’s pace increased, becoming brutal, jarring. Kate’s noises were desperate, animal.

"Switch!" Monroe barked.

Jamal pulled Rick back. Kate coughed, gasping for air, drool coating her chin. In one fluid motion, Jamal took Rick’s place at her mouth, driving his own thick cock between her lips. Monroe pulled out of her, his cock shining.

"You. Now. Here." Monroe pointed to Kate’s gaping, wet entrance.

Rick was pushed into position behind her. The view was obscene: her swollen, slick folds, gleaming under the lights. Monroe’s hand was on the back of Rick’s neck, forcing him down, forcing him to look. "That’s where I was. That’s my territory. Now it’s yours for a minute. Take it. Claim it."

Rick pressed forward. He entered his wife. The feeling was alien, tight and hot but layered with the visceral knowledge that Monroe had just been there, that Jamal’s spit was on her face. He began to move, a shallow, pathetic imitation of Monroe’s power.

Monroe watched, stroking himself. "Harder. Or are you too weak?"

Jamal fucked Kate’s mouth with short, savage thrusts, his hands fisted in her hair. Rick drove into her, his hips slapping against her ass, a clumsy, frantic rhythm. Kate was a rag doll between them, her body used in triplicate. Her eyes, when they met Rick’s, held a shattered, glassy void.

"You see?" Monroe said, his voice a ragged hymn of triumph. "You see what it takes? You’re a visitor in your own wife. A tourist. I live here."

Monroe pushed Rick aside, reclaiming his position with a single, deep plunge that made Kate scream around Jamal’s cock. Rick stumbled back, his own orgasm ripped from him unexpectedly, messily, onto the polished concrete floor. He stood there, panting, emptied, as Monroe and Jamal took Kate apart, their final, synchronized releases marked by guttural shouts and the violent trembling of her subdued body.

Afterward, Monroe handed Rick a towel. Not for Kate. For the floor. "Clean that up."

Rick knelt, wiping his own come from the cool stone. He heard the soft, wet sounds as Monroe tended to Kate. He heard Jamal in the shower. When he stood, Kate was wrapped in a sheet, her face blank. Monroe looked at Rick, his expression unreadable.

"Now you know," Monroe said. "Now you can write it truthfully. Next time, you'll participate from the beginning. You’ll learn your lines."

Rick helped a silent, shaky Kate dress. They rode the elevator down without speaking. In the taxi, she stared out the window. She spoke only once, her voice raw from use.

"You lied about the editor."

"Yes."

She nodded slowly, as if confirming a terrible theory. "It’s better when you’re there," she whispered, not looking at him. "It makes it real."

At home, she went straight to the shower. Rick sat at his laptop in the dark study. The blank page glowed. He placed his fingers on the keys. This time, he didn't write about Mark or Lena. He wrote in the first person. He began with the taste of expensive bourbon, and the feel of a hand, not his own, making him hard. The words came fast and ugly and true. He wrote until the sun bleached the night from the sky, finally understanding what Monroe had meant. He wasn't just documenting the ruin anymore. He was composing its gospel.

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