Let's see what the two teams can do working as one team, shall we?

NCIS:

It was morning as Agents Tim McGee and Nick Torres were looking over the Jennifer Knight case on the Plasma screen when they heard the elevator doors open, they looked to see Ellie walk out wearing black jeans, black boots, a red t-shirt and a crimson leather jacket. She was shortly followed by Hobbs, Brian and Sean but it confused McGee.

"Agent LaSalle?" McGee asked himself as Sean waved at him as three of four headed upstairs to MTAC. "Why is NCIS Special Agent LaSalle working with them?" Tim asked as Hobbs walked towards them.

"Because he was undercover… as an NCIS Agent." Hobbs told the pair as Gibbs overheard it. "The man you saw is actually called Sean Boswell; the DSS put him undercover as Christopher LaSalle to help us on the case. And at the time, we didn't trust NCIS. The last time we did, we had issues." Hobbs told them as Gibbs walked towards him.

"Who here gave you so much trouble that made you send someone undercover at NCIS?" Gibbs asked as Hobbs stepped forward and looked at the marine.

"One of your former Directors: Tom Marlow." Hobbs told him which surprised the team. "Short version, the DSS and NCIS decided to work to capture a dangerous person but NCIS didn't give us the intel in time. But it was too late, several DSS agents were killed." Hobbs explained which surprised them. "But if we work together now and things end differently, we'll be more honest, if you agree to be too." Lucas offered as he held out his hand. Gibbs looked at Hobbs then they shook hands.

"What do you have so far?" Gibbs asked as he gave Lucas the clicker. Hobbs nodded as he took the clicker then pressed a button, showing the information they had so far.

"While he was undercover, Boswell visited the Naval Base and gained accessed to Knight's computer, only to find out that someone else accessed it from the outside." Hobbs started which surprised them. "Bishop's in MTAC with O'Conner and Boswell, working on it. Meanwhile, Torretto told a group to check the crime scene again." Hobbs explained and Gibbs nodded.

"McGee, you and Torres go and meet Torretto's team at the crime scene. Extra set of eyes might help." Gibbs ordered and Tim nodded as he and Nick grabbed their bags then ran towards the elevator. "Let's see if your team has found anything." Gibbs suggested as he and Hobbs headed upstairs.

"Correction: our team." Hobbs told him and Gibbs smiled as he scanned his eye then they entered MTAC.

Meanwhile:

At the crime scene, Dom, Abby and Letty were looking for any evidence that had been missed until they heard the roar of a V12 engine. They looked behind them to see a silver Aston Martin V12 Vantage back up next to Dom's Dodge Charger. The driver's door opened and out stepped Deckard Shaw as he removed his sunglasses.

"Sorry I'm late. I was making some calls about the IP address." Deckard explained as he put on some leather gloves. "I know someone that is just as good at computers than Eleanor." He explained as he tossed leather gloves to the others, they then put them on and continued their search.

"I wonder what could've gotten Jen killed." Abby asked, then they heard silence when they looked over at Deckard, who was holding a phone.

"Maybe this could tell us?" Deckard suggested as he looked around the area then he saw something metallic. "What's that over there?" Deckard asked as he pointed at the object. As she was closest, Letty carefully walked over and picked up the object: it was a handgun.

"Nice eye, Shaw." Abby complimented as she walked over to him, whilst taking out an evidence bag.

"What can I say, sweetheart? I got a good eye, especially after all the training I had to kill." Deckard smiled as he carefully put the phone in the bag. "Whoever killed your girl, thought about things carefully. But even trained killers make mistakes, I did with you lot." Shaw smiled as he looked at Dom, making him smile too.

"I'll run them to NCIS, you guys head back. Betting Mia needs up with the three angels." Abby suggested as they walked up to their cars. Letty and Dom nodded then they got into their cars then took off, with the Charger going first then followed by the Jensen.

"I'll go with you, Sciuto." Deckard told her as he headed towards his car. Abby smiled as she got into her Trans-Am while Deckard got into his V12 Vantage. They started up their cars and were about to leave when McGee and Torres arrived in their blue Dodge Charger. "You're late, boys. We were just heading to your HQ to hand in some evidence!" Deckard shouted as he and Abby raced off, leaving their pair behind.

NCIS:

In MTAC, Gibbs and Hobbs were waiting for the results of the IP address's original location when the door opened and in walked Leon with Abby and Deckard behind them. Vance stood between Gibbs and Hobbs while Deckard stood beside Lucas and Abby stood behind Ellie.

"Give me an update." Vance requested with his director's tones as he and the others looked at the huge screen. Ellie turned towards Hobbs who gave her a nod, indicating to tell the Director what they had found. The former agent turned to her former boss.

"We managed to crack the encryption and found out who accessed the computer." she said typing a few more keys as a name and photo popped up.

"James Donald. Age; 34 and he lives…..surprise, surprise only four blocks from the naval base." She informed the Director, who nodded and took out his Phone, "I'll get McGee and Torres on it. Good work Bishop." Vance was about to make the call when he saw Hobbs already on the Phone.

"Dom, can you head to an address and check it out?" Hobbs asked as he nodded at Deckard, he nodded back then left the room with Brian. "I'll get Eleanor to send you the address. Brian and Deckard will meet you there. There should also be two NCIS Agents meeting you there; Torres and McGee." Hobbs told Dom as he looked at Leon, who looked like he was about to get angry.

"Understood Hobbs. We'll call once we check the location out." Dom answered on the Phone then the call ended.

"What was that about, Agent Hobbs?" Vance asked as he put his arms behind his back while Lucas put his phone in his pocket. "You called your team before I could call my team, why?" Vance asked but Hobbs pointed at Abby, who was on the Phone to Tim.

"Abby was already calling McGee, I told her what to do before you made your call." Hobbs told him then he walked over to the women. "Good job, you two." Hobbs complimented and both Ellie and Abby nodded with a smile.

"Agent Bishop. While I respect your relationship to your friends, don't forget that you are an NCIS Agent. There is a protocol to follow." Vance spoke then he was surprised as Ellie stood up and handed her badge to the Director.

"Not anymore. I quit." Ellie answered then she walked out of MTAC, Gibbs then followed after her; but not before giving Abby a kiss on her forehead.

"Great job, Abs." Gibbs smiled and it made Abby smile as she missed her father figure. She then got back to working on James Donald's background.

Car park:

Ellie was walking towards her new car from Dom; it was the orange Toyota Supra that Brian gave to Dom as his '10 second' car. Gibbs had just got outside as Ellie got into her car then just sat there, staring at the sky.

"Never thought you had this side to you, Bishop." Ellie looked to her left to see Gibbs walking over to her. Ellie smiled then chuckled as she looked at Gibbs, who was now leaning against the back left wheel arch. Ellie got out of her car then stood next to Gibbs as they both folded their arms. "How did you meet them? You never spoke about them or your past." Gibbs started and Ellie smiled as she reached into her jacket pocket then took out a photo: it was a younger Ellie with Dom, Brian, Mia, Letty, Abby, Sean and two others.

"This was taken a few years back, before I joined the NSA." Ellie started as she handed the photo to Gibbs. "The two others in the photo are old friends; Han Seoul-Oh and Gisele Yashar." Ellie told him then she looked at Gibbs. "Do you remember when Ziva was here, if she knew Gisele?" Ellie asked which confused Gibbs as he looked at her.

"Why would Ziva know Gisele?" Gibbs asked but then Ellie looked at him and a serious look.

"Because before she joined the family, Gisele was Mossad." Ellie told her which surprised Gibbs. "She left as she wanted to help more without boundaries." Ellie explained as Gibbs handed back the photo.

Meanwhile:

At the home of James Donald, Nick and Tim were waiting by the driveway when they heard vehicles approaching: it was a silver 2002 Nissan Skyline GT-R R35, a black 2009 Dodge Challenger R/T and a white 2005 Jaguar XKR. The doors opened to each car and out stepped Dom, Brian and Deckard.

"What's with you lot and showing up in flash cars?" Nick asked as he and Tim walked over to them. "I mean seriously! A Skyline, a Challenger R/T and a XKR!" Nick told them as Deckard took out a grey case and opened it, revealing three Beretta M9's. He took out two and handed them to Brian and Dom while he took the last one for himself.

"Best come prepared." Deckard smiled as he put in the magazine and pulled back the barrel. "What are we waiting for? An invite from the top dog?" Deckard asked with a smile as he, Dom and Brian walked up to the house, followed by Tim and Nick. Dom knocked on the door three times but there was no answer.

"JAMES DONALD! NCIS, OPEN UP!" Brian shouted as he and the others took out their guns. "Dom, want the honors?" Brian whispered with a smile and Dom smiled back. He took a step back then with all his might, kicked the door off the hinges when they all heard an engine coming from the back.

"Torretto, let's go!" Deckard suggested and Dom nodded as they ran to their cars while Brian stayed with Tim and Nick to investigate the house. Dom and Deckard fired up their cars then chased after the mystery person as Brian led the NCIS Agents into the house: Brian headed to the living room while Tim checked the kitchen and Nick headed to the bedroom and bathroom.

"Looks like we won't be getting anything out of James," Brian called over to the others. When Nick and Tim walked in, they saw that James Donald was dead with several bullets in his chest. "Check the house for anything that would make someone kill! I'll call it in." Brian ordered as he took out his Phone and called NCIS. "Hobbs! James Donald's dead. Dom and Shaw chased after someone who left after we arrived." Brian updated while McGee searched the house but Nick wasn't happy.

Meanwhile:

On a busy motorway, Dom and Deckard were racing to catch up with the vehicle that left the house; they found out that it was a blue 2004 Subaru Impreza WRX STi. The driver was quickly moving from one lane to another, with Dom and Deckard slowly catching up to them.

"Whoever is driving, they're good!" Deckard shouted over the radio as the pair both changed gears, causing their cars to speed up more. They were about to catch up to the Subaru when it quickly sped off down a road and in the direction of lower DC.

"We can't let them get away!" Dom shouted as they quickly pulled up their hand brakes and quickly turned around the corner then sped down the road. They chased the Subaru as they followed the mystery car down past numerous empty buildings. The chase continued through a deserted warehouse, the Subaru raced through a door then the shutters closed behind; blocking off Dom and Deckard.

"DAMN IT!" Deckard shouted as he and Dom got out of their cars. Dom looked around the building while Deckard looked around the shutters. "Lookie here!" Deckard called over then Dom walked over and watched as Shaw removed a device. "A sensor rigged to the shutters; to close after a vehicle drove through." Deckard explained as he stood up and put the device in an evidence bag. "We could hand this to the forensics; see if they can find anything or…." Deckard paused with a smile as he looked at Dom.

"When you see Abby, see if she can find anything. Hobbs has got us some FBI equipment to help, the Director wasn't as helpful." Dom explained as the pair got back to their cars and reversed out of the building.

James Donald's house:

Back at the house, NCIS was checking the house while Brian headed out to the garage at the back. He was about to open it when a red and white 2009 Ford Mustang Shelby GT500 parked up behind the Nissan, it was Roman Pierce.

"Hey Brian! Need help, brother?" Roman asked with a smile and Brian nodded. Brian opened the door then he and Roman put on gloves and started to look around. "Mia wanted someone to back you up, Dom's back at Yard with Shaw." Roman told his friend as Brian looked under a table then slowly pulled out a shotgun and handgun.

"Whoever this James Donald was, he was either paranoid or he had a past." Brian suggested as he put the guns on the table as Gibbs walked in. "Gibbs, we found these under the table." Brian updated as Gibbs picked up the handgun and inspected it. "The handgun has been fired recently but the shotgun, it hasn't been used."

"Yo Brian, look up." Roman pointed out as he pointed at two cables leading from a hole in a wall that were going behind a wall in the back of the garage. Gibbs walked over to the hole in the wall and looked through.

"The cables lead to behind the TV," Gibbs told them while Brian and Roman moved the table from the wall then started searching for a lever or handle. "Anything?" Gibbs asked but before Brian could answer, Roman picked up an axe and hit the wall, breaking through.

"What? For all we know, there could be computers behind here lacking into the Government." Roman told them as he reached in and grabbed a lever, he slowly pulled the door back and the trio were surprised: the hidden area contained computers, weapons and documents from the Navy. "Why would this dude have weapons from the Marines, as well as documents from the Navy? Do you think Jess might've been playing us?" Roman asked as Brian opened a case and inside was documents about the Navy's strategies against aircraft attacks.

"I don't know, Roman." Brian answered as he closed the case then looked at the computer and saw a notepad. "A notepad! Maybe there's something in here that could help." Brian suggested as Roman walked over and they started going through it until Brian stopped.

"Brian? What is it?" Roman asked which caught Gibb's attention. "Let me see, Brian." Roman looked at the notepad and saw what made Brian puzzled. "Isn't that her number? But how could this dude know her?" Roman asked but Brian shrugged his shoulders.

"You two better explain what you're talking about." Gibbs told them as he walked over to them. Brian sighed as he handed the notepad to Gibbs then pointed at a phone number.

"We know that number. Me, Dom, Mia, Letty, Roman, the whole team. Even Ellie and Abby." Brian told him which got Gibbs attention. "It was the number used by a close friend who died. Former Mossad Officer, Gisele Yashar." Brian told Gibbs which surprised him as he knew Mossad all too well.

This is the end of chapter 4 with a surprise! What do you think of this jaw dropper? What does Gisele have to do with this? Will the teams find out who is behind everything?

See you all next time!