prompt: Beckett with her hands tied behind her back; Castle in charge.


When she bit his ear and whispered Let's do something fun tonight, this wasn't exactly what she'd had in mind.

Kate's sitting on his bed. Blindfolded. Her hands are tied behind her back, one of his neckties knotted around her wrists. And he's kissing her.

It's long and deep and thorough, the kind of slow, sucking kisses that leave her aching and wet, lips and teeth and tongue, his hands cradling her face as he makes her head spin. Her fists are clenched, desperate to touch him, and she lets out a shaky sigh as his lips trace a line over her jaw and his hands slip under the silky, flimsy fabric of her nightgown.

"Castle – " she murmurs, her voice trailing off when his tongue hits the sensitive spot behind her ear and his hands cover her breasts, palming them, squeezing gently.

By the time he pulls his hands away she's dazed from his touch, hyperaware of him, her skin crawling, her nipples tight. She sways unsteadily, her balance off, and this is – unsettling, she's not used to feeling so helpless –

He lays her down, one hand cradling her neck carefully as he settles her onto the mattress. His lips brush hers briefly but then he's gone, and she has to bite her lip to stop herself from pleading Come back. But she's got no leverage, can't do anything but arch helplessly under him. She can't even touch him, her hands pinned under herself. She holds her breath.

There's a long moment, the swish of fabric – his shirt – that she hears hit the floor, and she's wondering what he's going to do when suddenly his mouth is on her skin. He plants slow, wet kisses on her thigh and she squirms under him, her breath coming fast and hard. He's smirking, she can tell, he's pleased with himself, but he doesn't stop, just soft open-mouthed kisses higher and higher and higher until he's tugging up the hem of her lacy little nightie.

And then his mouth is between her legs and she cannot breathe.

He's so good at this, so obscenely good. His tongue is slow and firm and relentless, teasing her with pressure so close to where she really, really wants it. Her toes dig into the mattress, and she just needs to touch him, just push him where she needs him to be. But her bound hands are trapped under her back, arching her hips just so and when he suddenly slides two fingers deep inside her she lets out a choking cry.

His fingers stroke inside her and he rolls his tongue over her and it's too much, the pressure coiling tight in her abdomen. She's moaning and writhing and pleading please Castle please, jerking uncontrollably under his agonizing ministrations.

He curls his fingers and swirls his tongue over her clit and then he sucks and she falls apart, her whole body swept in an orgasm so fast and hard it's blinding.

He slows, eases her through the final waves of heat, and he finally reaches up to tug off her blindfold. She blinks, trying to calm her racing heart. He's grinning, wiping his mouth on the sheet, his blue eyes sparkling. "God, you are really the sexiest woman ever."

She huffs out a shaky laugh. "You always think flattery's gonna get you laid, Castle."

He grins cheekily, reaching behind her to untie her wrists. "Well, I did just get between your legs…"