Written for petragem over at omg-rookieblue on livejournal

Gail grabs her gun when she hears a crash outside her bedroom window. There's been a string of home invasions in her neighborhood lately so she always keeps it within reach. Pulling back her curtains, all she sees is an empty fire escape. Sighing in relief, she double checks the lock on the window before walking back to the kitchen, a lonely bottle of Riesling waiting for her on the counter.

Or at least that's what she would have been doing if it wasn't for the palm suddenly slamming against the window.

Raising her gun, she approaches the window cautiously. When she pulls back the curtain to get a better view, a pair of blue eyes stare back at her and she jumps. "Christ on a cracker! Luke, what the hell are you doing here?" When he doesn't answer, she knows something is wrong.

"Luke?" Gail opens the window and watches as Luke falls in a heap onto her bedroom floor, blood all over his clothes. She automatically starts pulling off his jacket to search for the source of all the blood, all but dragging him to the bathroom.

"Come on Callaghan, let's get you cleaned up. Then you can tell me what the hell you're doing here and not at a hospital."

With his help, she manages to get him seated on the toilet. After checking every inch of his body for open wounds, she's relieved to find a bruised hand and a shallow cut on his forehead to be his only injuries (she hates how heavily head wounds bleed,) but it's nothing a good night's sleep and some whiskey can't fix.

As she gets a good look at him under the terrible fluorescent lighting, Gail can't help but notice something is…off. And it isn't just the pale complexion and bloodshot eyes staring back at her.

No, it's the way he's undressing her with his eyes, making her extremely uncomfortable in a way he's never made her feel before.

"He was right, you are something else." Luke's eyes roam over her body again, "but he forgot to mention glutes I could bounce a quarter off of. You do yoga?"

Gail gives him a wary glance, "You're talking more nonsense then usual, Homicide. Do I have to worry about brain damage?"

"Only if it means we get to play doctor. What do you say hot stuff? Wanna be my nurse?" He says, a smirk playing on his lips. Okay, now she knows something is definitely wrong with him.

Before she decides whether or not to call an ambulance, she hears the the buzzer indicating someone at her door. Gail sticks a finger in Luke's face, "Don't move. I don't need you slipping and knocking yourself out." She can feel his eyes latching onto her ass as she walks out and throws him the finger. Whatever is going on with him, she doesn't like it at all.

The doorbell gets louder when she exits the bathroom, the person behind the door being obnoxiously persistent. "Coming, I'm coming!" She yells out, wondering if the entire world has gone insane. But when she opens the door and sees the person standing there, she begins to wonder if she's the one with the head trauma.

"Luke?!" Gail stares at him openly as he invites himself in. The rumpled clothes and disheveled hair, as well as the bruise like shadows under his eyes, make him look like he hasn't slept in days. Gail also notices the lack of blood on him. He does not look like the Luke she just left in her bathroom a minute ago. "How the hell did you get outside?"

When he sees the blood covering her shirt, instead of answering her question, he curses like she's never heard him do before.

"Where is he?" Luke growls, pulling out his phone and dialing furiously.

"Who-"

"Chad." He cuts in, phone pressed against his ear. "I'm gonna kill that idiotic asshole."

"Hey, no need for name calling bro."

They are both interrupted by the figure appearing in the bathroom doorway, "Baby Got Back" by Sir Mix-a-Lot coming from his pocket.

"We are not brothers." Luke says with clenched teeth, hanging up his cellphone.

"Whatever you say…bro."

"What the hell are you doing here?" Luke's fists clench at his side.

"I was scared. I thought someone was following me." Chad hopes to appeal to Luke's protect and serve nature, but this just makes him even angrier.

"And so you decide to come here? To my girlfriend's apartment?!" Luke yells, taking a step closer to Chad.

"Whoa calm down Luke. She's a cop with a gun. I figured I'd be safer here than out there." He tilts his head towards the window.

"Can someone explain what the hell is going on?" Gail interrupts before their bickering turns into an all out brawl. Both Lukes raise their eyebrows and it's the most jarring thing she's ever seen.

"Can you explain how he looks exactly like you, barring the whole sleazy fratboy stare, ends up in my bedroom? Seriously, my eyes are up here." Gail glares at not-Luke when she catches him staring at her chest.

"You wouldn't believe me if I told you." Luke rubs a hand through his hair.

"What, is he your clone?" She obviously means this as a joke but by the identical looks on their faces, she knows she's hit the nail on the head.

"Holy shit, you're serious." Luke turns to her, the line between his eyebrows growing deep with worry. This is a familiar sight. Whatever is going on, Gail feels comforted to at least know which one is her Luke.

"Gail, do you remember that case I was working on? The string of victims all with their faces slashed beyond identification?"

Gail nods. "Yeah, what about it?"

"Well I stumbled onto something, a lead into the identity of one of the victims. He had my face Gail." The haunted look on his face makes Gail feel sorry for him. "So I went back and ran some DNA on all the victims." Luke turns back to Chad and gives him a glare, "Chad's the only one I've found alive."

Luke, the real Luke, walks towards her. "Gail, I know this is a lot to take in but I really need you to believe me."

Gail looks back and forth between the two men and walks into the kitchen without a word. Following her, Luke and Chad watch as she takes a large swig from a bottle of wine. She looks back and forth between them again and takes a deep breath.

"Okay, so my boyfriend is a clone." She takes another large swig and seems to come to a decision. "At least I picked the good one."

"So you believe me?" Luke looks at her in amazement. Gail shrugs and gives him a smile.

"It's hard not to believe when I've got the Doublemint twins standing in my kitchen. So I guess I do."

Smiling for the first time since he's entered her apartment, Luke rushes toward her. Cupping her face in his hands, he places a soft kiss on her lips. This, his hands on her face, feels right to Gail and she immediately relaxes in his grip.

"Don't mind me, I'll just sit here and enjoy the show." Chad says, grabbing the bottle of wine Gail placed back onto the counter.

"Shut up Chad." Luke and Gail both respond, before Gail pulls Luke's face back down to hers.