I'm a huge fan of both tv shows and I've enjoyed reading people's crossovers of them. But I decided to make my own because most of the crossovers feature Castle as being Mal and hiding it from everyone. I wanted to see what the character of Mal would be like if he met Beckett.

Anyways, hope you enjoy :)

(Recently edited slightly)

Malcolm Reynolds had been having an ordinary day before found her that is. Well, as normal as his day could possibly be - there had been that small incident where they had almost crash-landed on Persephone because Wash's flying was so out of control. And Kaylee yet again was demanding her Captain buy that overly-expensive engine part they 'needed', Mal assured her that they could do fine without it for a couple more months...he hoped. If not, they'd probably combust and cease to live, but it wouldn't be the first time Mal had almost died and it wouldn't be the last.

His gorram boat was just falling apart, and they were barely scraping the bottom of the barrel as it was. Mal knew he had to find a job - the higher the pay, the better. Of course that meant there was a higher chance of getting killed - but who hasn't been shot at least once before? Mal shook his head lightly as he pondered the thought - he had over six bullet wounds, not to mention the scars from his other assorted war wounds. He headed down towards the cargo hold, he didn't even need to look where he was going - he could find his way blindfolded on Serenity. Mal stroked the metal banisters fondly as he walked down the stairs, aiming to check the cargo they smuggled from their last job-gone-wrong before any more passengers boarded. He was intending on selling the cargo in Beaumonde, he was reckless enough anyhow - they needed the money desperately.

His line of thought was interrupted when Mal found himself thrown across the hold as a piercing white light blasted through his vision. It took at least a minute for his hearing to come back to normal from the high-pitched ringing.

Mal jumped to his feet quickly - after being in the war, he was used to bombs and other explosions going off around him. And yet, there was no debris or holes in his boat - obviously the bomb attempt had gone wrong somehow, although it did leave him slightly deaf in his left ear.

Mal figured that some 'liou coe shway duh biao-tze huh hoe-tze duh ur-tze' (stupid son of a drooling whore and monkey) had planted a bomb in one of the crates they'd picked up - probably Badger. What he didn't expect to find was a female figure lay sprawled on the smooth metal floor - like an angel.

"Wuh duh ma huh tah duh fong kwong duh wai shung," (Holy mother of God and all her wacky nephews) he murmured, gazing at her in confusion.

She was gorram beautiful he'd give her that - maybe moreso than any companion he'd ever seen before - including Inara. She was quite pale, she'd probably never worked a full day in her life. Her hair was auburn, falling around her face in neat, loose curls. Her lips were full and red - Mal reckoned she probably had a killer pout. Her clothes were strange though - the pants were some form of older denim, with heeled boots - definitely a working woman, he grinned.

But then something pulled him out of his mini-catalogue of the woman - she had a gun, and it looked like a fed's gun.

He cursed loudly "Tai-kong suo-yo duh shing-chiou sai-jin wuh duh pee-goo," (Shove all the planets in the universe up my ass).

He hated the gorram Alliance.

The woman suddenly stirred, her long eyelashes fluttering open as they landed on him. She frowned, the creases on her forehead giving her a more older and experienced look.

"Castle? Where are we? What happened?" she questioned slowly, looking him up and down in confusion.

Mal frowned, not liking the familiar tone she was using to talk to him with.

"I don't know who you think I am - but I ain't him. I want t'know who in the gorram 'verse you are, and what the hell you're doin' on my boat!" he spoke harshly, his hand reaching down to his gun in his leather holster.

The woman's eyes followed his hand and widened fully in disbelief and shock.

"C-castle?" she murmured.

"Rick?" she whispered, her hands shaking until her eyes rolled back and she fell backwards - Mal managed to catch her before she impacted with the floor.

A ghost of a smile hovered on his face as he notice how well she fit in his arms - until he remembered that she was probably an Alliance spy. Then his face hardened as he carried her towards the Doc's room. 'He ought to be earnin' his way 'round here anyway,' Mal reasoned. He'd wait til she woke up, and then the questioning would begin - without any fainting.

Hope you enjoyed it - Review and alert ^_^