Note: Hope everyone has had a good Christmas. I finally finished a story and Wenwalke has been her usual amazing self and beta'd it for me. So here you go, enjoy.

Disclaimer: I do not own H50 or make any money from this. Just whumping for the hell of it.

Chapter One

Steve and Danny made their way up the beach and secured their boards in the back of Steve's truck. Making the most of their day off, and the fact that Grace was away with Rachel visiting relatives during the school holidays, they had grabbed some waves together.

"I gotta say man, you were really good out there." Steve had been surprised how much Danny had improved since the last time they had surfed together, and realised Danny must have been getting a fair bit of practice in on their down time, even if he wouldn't admit it.

"Thanks." Danny blushed, paying far more attention to securing his board than was really needed. The last thing he wanted was Steve gloating about how he was accepting the island life.

"So you fancy getting some food and heading back to my house for some beers?" Steve asked changing the subject when he saw his friend's obvious embarrassment.

"Yeah sounds good." Danny smiled at Steve, his attention then caught by the man standing about 20 meters behind his partner, deep in conversation with another man. He squinted to get a better look. The man looked familiar but he was stood at an angle to Danny so he couldn't get a clear view to place him. He racked his brain trying to remember where he had seen the chiselled jaw and tanned skin before.

"So, you fancy steak, or fish? I can throw either on the grill and I have salad in but..." Realising Danny was paying no attention to him Steve tried to get his friends attention. "Yo Danny, hey, Earth to Danny." Hand waving in front of his friends vision he finally was rewarded when Danny focused on his face, and not over his shoulder. "You good?"

"Yeah, sorry. I just think I know that guy but can't place him." Steve started to turn around to look, but the two men behind him said their good-byes, and the man Danny had been watching turned allowing him a full view of his face. Recognition slapped Danny in the face and he quickly dropped down behind Steve's truck, hiding himself from view. Steve sensed the movement and looked back at where Danny had been stood, to find thin air. Walking around the truck he found Danny crouched low.

"What the hell was that?"

"Did he see me?" Danny asked concerned.

"No, I don't think so." Steve watched as the man got into his car and drove away. "He's gone. Care to fill me in as to why we are suddenly having a game of hide and seek."

Danny cautiously stood up and let out a sigh. "Shit, what the hell is he doing here?"

"Who? Danny, who was that guy? What's going on?"

"That was Dimitri Ivonov. I haven't seen him for over thirteen years, which is why it took me a while to place him, but it is definitely him." Seeing Steve's confused face, he continued. "When I first made Detective I was sent undercover, fresh face and all, to work a gun smuggling case. Rachel was really pissed. We had just got married, and then I was going undercover and leaving her for several weeks. I still don't know who was scarier, her, or Dimitri."

"Ok, so you arrested him?" Steve could understand why Danny wasn't keen on bumping into someone he had sent to jail.

"Not exactly. His brother, Vladimir, was running a gun smuggling ring through the docks at New Jersey. I went in undercover as the new Dock foreman and made it known I was open to some back door business. Vladimir cut a deal with me to let the guns in, and I'd look the other way. I managed to get pretty friendly with Vladimir and he showed me his operation, introduced me to his younger brother, Dimitri. We were able to take down the whole operation from supplier to the guys they were selling the guns to, however Dimitri slipped through the net."

"And he ended up on our island." Steve was not happy that someone with obvious ties to weapon smuggling was on the island, and they didn't even know it.

"Looks like it, my guess is he is here to conduct some business." Danny opened the truck passenger door and climbed in.

Steve joined Danny and started the engine. "Good job he didn't see you, could have spooked him, now we have the upper hand. We will brief the team tomorrow and start looking into him."

"That guy was a crazy son of a bitch, only Vladimir could control him. With him out of the picture I hate to think what he is getting up to." Danny sighed, remembering back to seeing Dimitri beat one of Vladimir's men unconscious because he was late picking up a shipment.

"Well whatever it is, we're about to put an end to it." Steve grinned then pulled the truck out of the parking lot and headed back to his house.

5-0-5-0-5-0-5-0

The following morning found the team gathered around the smart table. Danny had briefed them all on his undercover operation, and they had started running a background search on Dimitri Ivonov.

Two hours later they were still gathering information. They had decided that he must have come to the island under a false I.D, as there was no history of a Dimitri Ivonov entering the island.

"Are you sure it was him, Danny? Maybe he just looked like him." Kono suggested.

"It was him, trust me. Did you get any joy on the car we saw him driving?"

"Steve only got a partial plate, brah, so I'm still trying to get the DMV pictures of all the registered drivers of cars that match the description, it's a long list." Chin explained.

"Maybe we shou..." Steve stopped as he saw the Governor enter the office with two suit clad men, his security detail following behind. "Governor, what can we do for you?"

"We're here to speak to Detective Williams. Detective could we use your office?" Governor Denning indicated to the two men with him to enter the office.

"Sure, I guess." Danny shrugged his shoulders at Steve's questioning look before joining them.

As he entered the office the taller of the two men accompanying the Governor closed the door, shutting out the rest of the team. Steve, who had been following his partner was not impressed at having the door shut in his face.

"Er... Am I in trouble Governor?"

Denning chuckled, "not at all Detective Williams, let me make the introductions and then we can explain what we are doing here. This is Agent Smith and Agent Wesson, FBI."

"Smith and Wesson? Really?" Danny attempted to keep a straight face at the pairing.

"Yes really, and we've heard all the jokes. Can we get down to business?" Agent Smith replied.

"Sure, so to what do I have the honour of a visit from the FBI?"

"Your team ran a search earlier this morning on a Demitri Ivonov. It alerted our office We looked into his file and saw your history with Demitri. We need to know why you ran that search."

"I saw him yesterday down by the beach. We were trying to work out what he was doing on the island."

"You saw him? You're sure?" Agent Wesson looked excited.

"Yeah, I'm sure it was him, he is obviously a fair bit older than when I last saw him but it was him. What's the FBI's interest in him?"

"Demitri Ivonov has been on the FBI's radar for a while now. We believe he is running a massive gun and ammunition smuggling operation. We were closing in on him when he suddenly disappeared. We believe he got a tip off from a mole at the agency, and he went to ground. We had no idea where he was until your search flagged up. So we approached your Governor for his, and your, assistance."

"So Dimitri has moved his operation to the island? That's what we were worried about." Danny sighed.

"It would appear so, detective." Governor Denning spoke up. "I have promised the FBI your full cooperation on this one. Given they have been working the case for some time they will take lead, however you will play a crucial role in the operation."

"Me?" Danny wasn't sure where this conversation was going.

"We read the case notes on the operation you were part of in New Jersey. You were arrested along with everyone else to maintain your cover." Agent Smith explained.

"Yeah, that's right." Danny now had an idea where this was going.

"We would like you to go back undercover, try and situate yourself back in his operation, and feed us information so we can take him down." Agent Smith looked hopefully at Danny.

"And just how am I going to do that?"

"Once we track Dimitri down we can arrange for you to bump into him, you spin him a tale about needing work as no one will employ you with your record." Agent Wesson explained the plan.

"That might work, but where do my team fit into your plan?"

"They don't." Agent Wesson was blunt. "You will be working with the FBI on this one.

Danny considered his response. He looked at the Governor and could tell that he wasn't happy about that either. "Yeah, you see, that's not gonna work for me. If I do this, I want people watching my back that I can trust. I want my team in on this, or I don't do it."

Agent Wesson mulled it over, "your team can provide basic support. We are in charge and call the shots, you understand that Detective?"

"Yeah I got it." Danny nodded.

"OK Gentlemen, I have a very busy schedule. Now that that has been decided I will be on my way. You can brief the rest of the team. I expect to be kept informed." Governor Denning started to leave the room, opening the door he stopped and looked back over his shoulder, "Detective, stay safe."

The rest of Five-0 watched as the Governor and his security detail left and Danny emerged from his office with the two suits following behind.

"Everything ok?" Steve immediately asked.

"Stand down, everything is fine. It would seem Dimitri has been on the FBI's watch list for a while. We're gonna work with them to bring him down." Danny knew the team wouldn't be too keen on the next part of the plan.

"So why did they want to see you?" Steve had a feeling he knew where this was going and he didn't like it.

"I'm gonna go back undercover to get Intel on his operation."

The team erupted all together with a series of objections.

"No way, it's too risky." Steve looked ready to strangle the FBI agents for even suggesting it.

"This is one nasty dude. You can't go in alone." Lou stated.

"It's too dangerous Danny." Worry was written all over Kono's face.

Chin started tapping on the smart table and opening a file, "look what happened to the last undercover FBI Agent."

The screen was covered in pictures of a body, burnt beyond recognition.

"How the hell did you get those?" Agent Smith boomed, and Danny was sure the bulging vein on his forehead was about to burst.

"I'm good at my job." Chin replied.

"You didn't tell me about that, I'm guessing that happened before Dimitri disappeared." Danny said putting all the information he had in place.

"That was an unfortunate event, we told you there is a mole in the agency. This case is being kept on a need to know basis. You will have all the support that you need. This is the best chance we have to bring him down."

Danny looked at the pictures and the unhappy faces of his teammates, then the desperate faces of the FBI agents. "Ok we're doing this." Before the team could object Danny added. "I want to bring this guy down. I can do this. We can do this. I insisted that you guys were in on this too. I trust you to watch my back. Let's put an end to this."

Knowing it was best not to argue with the jersey detective, the others just sighed and nodded in acceptance. Relief swept the FBI agents at the chance to bring down the man responsible for the death of one of their own.

"I want a solid plan in place with back up arranged before he goes anywhere near that guy." Steve eyeballed the agents.

"Agreed." Agent Smith nodded. "Detective Williams's safety is our first priority. Now let's track down this guy so we can work out how we are going to arrange a meet up."

The team split up, each working their area of expertise to try and track down Dimitri Ivonov and the alias he was now using. It wasn't long before they were able to track him down, via the partial plate Steve had got, and start looking into his alias.

TBC