Title: Joining Forces

Fandom Crossover: NCIS/CSI Rating: M for later content

Pairings: Nick/Tony, Abby/Greg, Grissom/Sarah, Ziva/McGee

Summary: The Vegas CSI team catches a case involving a dead Marine and a chilling note. Nick is surprised to see an old friend when NCIS shows up on scene. When the killer targets one of their own…how will the teams respond?

A/N: I'm happy to say I got good feedback on the first chapter and so I've decided to continue it.

Chapter 2

"Damn! We got nothing…absolutely nothing. This guy's a ghost man."

"Yeah…4 murders in 2 weeks and no trace…nothing left behind but a note."

"How the hell do you catch a ghost Warrick?"

"No idea Nicky…no idea."

Warrick and Nick were sitting in the break room with coffee and sandwiches courtesy of Catherine. Grissom and Gibbs came in with Tony on their heels.

"Nick, Warrick. Agent Gibbs would like you two to go over everything with Tony here and see if the three of you can't pick something we might have missed so far."

"Sure thing Grissom. Have a seat Tony, Catherine brought sandwiches and coffee."

"Thanks Nicky. So…shall we do an overview of everything?"

The bosses left the room as the guys started rehashing the case. Warrick let Nick take over for this review.

"Ok scene 1 was a Marine with multiple gunshots; 2 in the chest, 1 in the groin, and 1 in the head. Killer left a note saying 'I'm only getting started'. Scene 2 we had a local LEO with multiple stab wounds to the chest and throat, and a note that said 'I can see everything you do'. Scene 3 was a Naval officer with strangulation marks on his neck and the note said 'Check the bodies closer'. Scene 4 was another Marine with nearly identical gunshot wounds to the first one. The note at the last scene said 'More will come'."

"What do the scenes have in common?"

"All 4 victims are male, they were all in uniform, all were drugged and sexually assaulted, and there was a note left at each scene."

"What are the differences?"

"They had different uniforms, different manner of death, and different messages on each note, and none of the victims look at all similar to each other."

"What was the drug they were given?"

"There were two. I can't pronounce either of them but Doc Robinson said one was a fast-acting sleep drug, most likely to take them down in the first place. He also said that the sexual assaults happened while they were alive and awake, but a mild paralytic kept them from fighting."

"So this guy targets men in uniform, military and police, drugs them and rapes them before he kills them? I got it so far?"

"Yeah, then he leaves no trace, no prints, nothing but a taunting damned note."

They turned to look at the door as Gibbs and Grissom came in.

"DiNozzo…report."

Nick had to bite his tongue so he wouldn't laugh at the way Tony jumped up and started rattling off what they knew. Warrick smiled at Nick, happy to see him able to laugh again after some of the crap he'd been through recently.

"You three take the rest of the night off and go relax."

"Thanks Grissom. See you tomorrow."

The bosses left again and Warrick looked at Nick.

"You two go have drinks and catch up on lost time. I'm gonna go catch up on lost sleep."

"Alright, see you tomorrow Warrick."

"Later Nicky."

Tony gave Nick a surprised look.

"He calls you Nicky too? Is there something going on I should know about…cuz ya know…if you're together then I have to give him the whole 'hurt him and die' speech."

Nick laughed at him.

"Relax Tony, we're not together…he's just a friend. He started calling me that when we became partners and it stuck."

"Where do you want to go…Nicky?"

"I don't know…you wanna go out someplace or just go hang out at my place?"

"Let's go to your place…not feeling like I want to be around a bunch of loud people right now."

"Alright, come one then…I'll drive."

They hopped into Nick's truck and headed off. Tony watched Nick most of the way there. It had been several years since they'd seen each other and Nick looked good, really good. Nick pulled into his garage and led Tony into the house where the man promptly flopped onto the sofa. Nick rolled his eyes and headed to the fridge.

"I got beer, water, more beer, and soda. Take your pick."

"Soda's good…we do have to work tomorrow."

"Good point."

Nick came in and handed one to Tony and opened the other as he sat on the opposite side of the sofa. They finished the sodas rather quickly and Tony got bored of the TV, so he resumed his earlier observation of Nick. Nick was tense as he finally looked at Tony.

"I can feel you boring holes into the side of my head Tony."

"I can't help it Nick. You look good…really good. It brings back some good memories."

Tony leaned over and ran light, gentle fingers over the side on Nick's neck. He gave a soft grin at the groan he received; the neck had always been Nick's weakness.

"Tony…don't do this…don't start something neither of us can keep up. You have to go back to DC, and I'm here…besides…we both know you're gonna go back up there and find another woman to sleep with."

Tony grabbed the back of Nick's head and gave him a fierce kiss that left the poor guy feeling a bit boneless for a moment.

"I'm not…I'm done with women for good Nick, especially after the last one. You were the one I turned to years ago when the shit hit the fan with the ladies. You're still my favorite out of everyone I've ever been with. We can figure something out Nick…There's always a way to make something work if you want it to."

Nick whimpered a bit as Tony pulled him close and his hands started wandering. Tony felt Nick's hand tremble slightly as it came to rest on his thigh and he whispered soothing encouragements to him.

"Tony…I haven't been with anyone in…"

"Shh…I know. Just relax and let me take control, just like I used to."

He felt Nick slowly start to relax under his gentle touches and soothing words. He ran his hands over the fevered skin of Nick's chest and abs. He realized that Nick had a growing problem in his pants that matched his own. He slowly worked his touches down to the tent in Nick's pants and gently rubbed against him. Nick's soft groans and mewls of pleasure stirred Tony's own arousal further. He quickly shed them both of their clothing and gently ground his hips against Nick, forcing him to lie down on the sofa. Nick started to gasp and whimper as the pleasure increased. Tony reached between them and started to stroke Nick's sizable arousal.

"Come on Nick…join with me…come on."

Nick reached down and started stroking Tony, matching his rhythm. They released together, calling each other's names. Nick's eyes widened as he felt Tony start licking up the mess that was made on Nick's body. When he was done he leaned back against the arm of the couch and proudly displayed his own. Nick shook his head at the fact that Tony was still half-hard, but obliged him in licking him clean as well. Tony pulled Nick up and held him against his chest.

"Tony…we need to go to bed…we have to work in the morning."

His words were mumbled against Tony's chest, and he was clearly halfway to dreamland already. Tony didn't give a verbal response, merely picked Nick up and carried him to the bedroom bridal style…despite much protesting from Nick about not being a girl.