AN: I'm insane enough to have fanfic going in four fandoms right now — the three in this story and a Scorpion fic, since my mom got me hooked on that show over Thanksgiving. We won't even mention the revisions I need to start on my Mob Chronicles trilogy... Usually I know my posting schedule, but I don't on this one between holidays and work. The first couple sections of this are done, but there are 12 total and I'm not sure how long it will take me to write all 12. Structure is as though this is three consecutive episodes of the shows, four acts per episode.

Kyrie and I had batted around a possible NCIS/LA/H50 crossover back in Season 10 of NCIS when we were wondering if they might move Hawaii 5-0 to 10 p.m. Tuesdays. Then NFA had a Hetty and Gibbs challenge that fit in perfectly with the concept I had for the triple crossover, so that pushed me to finally figure out how to plot and write a triple crossover casefic. Setting/timeframe is a little goofy, since when I started drafting it, the end of the previous season and into the current season had each show with a female character missing for part of the time. I finally decided to go with an NCIS with no Ziva or Bishop, an LA where Kensi is there and Sam and Deeks haven't yet been through the S4 finale wringer, and a H50 where Kono is in the picture, Cath isn't a part of 5-0 and Doris' whereabouts are currently unknown by Steve. All decisions are mostly for purposes of character juggling — please don't read anything else into them. HUGE thanks to Kesterpan for helping me work out the technical details of the casefic.

What Tangled Webs...

NCIS: Act 1

Gibbs hung up the phone. "Grab your gear," he said, taking his badge and SIG from his desk drawer.

DiNozzo and McGee followed him to the elevator.

"We need to get Ducky, Boss?" Tony asked.

Gibbs shook his head. "Vic's not dead," he said. "Beaten. Badly."

"What else do we know?" McGee asked. "Is a sailor the suspect or the victim?"

"Victim," Gibbs said. "Lieutenant commander, full dress blues, so Metro called. Two blocks from the Hotel Washington."

"You figure he was staying there?" DiNozzo asked. "That's a prime spot for an officer, and not cheap."

"If he was in dress blues in the middle of a weekday, he had to be here for something important," McGee said. "If it was business, even in front of Congress, he'd be wearing khakis."

"It's the wrong time of year for awards ceremonies," DiNozzo said.

Gibbs focused on getting them to the crime scene fast.

When they got there, Metro had the area cordoned off. Gibbs showed his badge and walked on through to where one of the Metro detectives stood.

"Robbery?" he asked.

"Nice to see you, too, Gibbs," the sergeant said. "His hotel key card and wallet were on the ground next to him." He held out an evidence bag. "We started shooting the scene and bagged the evidence for you."

"Man's a sailor," Gibbs said, taking the bag and signing for it.

"This is a block from the White House, Gibbs. We're under orders to get this cleaned up as quickly as possible, especially after that shooting a few weeks ago. Secret Service is on our ass. You guys are both feds, so dick it out with them."

Gibbs managed not to growl as DiNozzo and McGee walked up. "Any other evidence?" Gibbs asked.

The detective motioned to the bags next to him. "EMTs cut off his jacket to start working on him," he said.

DiNozzo picked up the bags and signed for them. "Sgt. Sparhawk will send over the photos as soon as he uploads them to the server," he said.

"You've got your evidence," the sergeant said. "Now go investigate while I release the crime scene."

Gibbs did growl at that, but the Metro cop was already walking away.

"Gibbs, this guy's a SEAL," DiNozzo said.

"You sure?" Gibbs asked.

DiNozzo turned the bag to face him, the SPECWAR trident visible through the clear plastic, blood smeared on the globe.

"Boss, who takes down a SEAL in broad daylight?" McGee asked.

Gibbs held out his bag. "Let's find out."

McGee took the bag and examined the key card inside it. "Hotel Washington, like you thought, Tony."

"ID?" Gibbs asked.

McGee opened the bag and used a rubber glove to flip open the wallet inside it. "McGarrett, Steven J.," he said. "Hawaii driver's license, so he was stationed at Pearl at some point."

"Let's go find out what the hotel can tell us about Lt. Commander McGarrett," Tony said. "Boss, we'll walk over while you move the car. You're more intimidating to valet drivers."

Gibbs ignored DiNozzo, but once the evidence was loaded into the bags, he pulled out, leaving his agents on the sidewalk.

~NCIS~H50~LA~NCIS~H50~LA~

Tony was glad the manager at the hotel didn't put up a fuss over letting them up into McGarrett's room.

"OK, McWiFi, what do we have on McGarrett?" Tony asked.

"Single, Annapolis grad, and in the reserves," McGee said. "Transferred to the reserves four years ago after his father died. He's done his reserve drills out of Pearl since then."

"He retired to Hawaii?" Tony asked as they got off the elevator.

"He graduated from high school there," McGee said. "He got into Annapolis in part because his grandfather was killed at Pearl. Also a Steven John McGarrett, from what I can find. His father, John McGarrett, served during Vietnam then became a cop with the Honolulu Police Department."

"So he's third-generation Navy," DiNozzo said. "That doesn't explain the dress blues on a weekday afternoon."

Then they opened the door and he stopped in the doorway.

"Tony, move," McGee said.

"You said McGarrett was single, right?" DiNozzo asked.

"That's what his file says," McGee said. "No dependents listed."

"Then what's all this?" DiNozzo stepped aside so McGee could see into the room, which had two beds, two sets of adult suitcases, and a rollaway cot with a pink stuffed rabbit on top of it.

"I don't know," McGee said. "Where's a suitcase for the girl?"

They spread out through the room and searched.

"Tony, I don't see any children's clothes," McGee said. "And both sets of adult clothes are men's."

Tony stuck his head out of the bathroom. "None in here." He looked over the bathroom one last time and walked back out. "McGee, are you sure about that?"

McGee pointed to the suitcases. "Check for yourself. The sizes are different, so it's not all McGarrett's stuff."

"Does he have a brother?" Tony asked.

McGee shook his head. "One sister, Mary, who's three years younger. Their mother died when McGarrett was fifteen. That's all that's in his personnel file. Abby's running down other SEALs he served with to see if there are any anomalies, but she won't have anything until we get back."

Tony frowned. "Boyfriend?"

"Two beds," McGee said.

"Maybe the little girl doesn't know?" Tony asked.

"We don't even know if there is a little girl," McGee said. "Bigger question: Where's the other man?"

They just looked at each other, unable to come up with an answer.

~NCIS~H50~LA~NCIS~H50~LA~

Danny held the handle of the rolling pink suitcase with one hand, looped his other arm around the pole in the Metro and then held Gracie's hand.

"Danno," she whined. "I'm a big girl. I can hold it myself."

"Yes, Grace, yes, you are a big girl," Danny said, looking over at the daughter who was almost as tall as his shoulder already. "But this is not Hawaii and it's not New Jersey and you don't know your way around, so we're going to stick close. I do not want to have to send Super SEAL on a Monkey hunt unless we're visiting the zoo."

"How many stops?" Grace asked.

Danny checked the colorful map on the wall of the subway car. "This next one is ours," he said. "Now, stick close to Danno in the station, all right?"

"Yes, Danno," she said.

Danny decided to ignore the eyeroll, just like he was ignoring the faint hint of a British accent that always colored Grace's voice after she visited Rachel's family in England. After a couple of days in Washington, they would take Steve up to New Jersey for a few days with Danny's family before heading back to Hawaii. Danny had been counting the days since Rachel and Steve and Grace had blindsided him with the plan a month ago. When Rachel and Steve had started conspiring, he did not know.

By the time they made their way out of the station and were walking down toward the hotel — well, Danny was limping and Grace was skipping — he was hoping Steve had finished his business at Annapolis and the three of them could get an early dinner and have a quiet night. Steve had said something about the monuments at night, but Danny was already planning to argue that they do that tomorrow night.

When they reached the hotel and got off at their floor, Grace insisted on taking her suitcase. Danny let her walk ahead of him, keeping his feet clear of the rolling bag trailing behind her. But when he got close to their room, he noticed the door was ajar and he could hear multiple voices inside.

"Gracie, let Danno go first," he said, keeping his voice low. "I have the key."

His beautiful, bright daughter just nodded, a big smile on her face. Danny hoped whatever he was going to find on the other side of the door wasn't going to change that. He had his badge with him, but since he was off-duty, DC's strict gun laws meant he couldn't carry his gun. It was sitting in the locked box Steve had in his suitcase for traveling.

Danny looked through the crack in the door and saw two men, both about six feet, wearing jackets with the familiar NCIS logo on the back. He pulled back and put his hand on the door handle, then deliberately raised his voice. "Come on, Gracie, let's see if Uncle Steve's back yet."

As he opened the door, he kept himself between the men and Grace, but when he opened it, they didn't have guns drawn. They both had their hands to their hips, but the weapons were holstered.

"What's NCIS doing in my hotel room?" Danny asked, stepping aside to let Grace in.

"Special Agent Anthony DiNozzo, and this is Agent McGee," the older one said. "And you are?"

"Detective Danny Williams, Hawaii 5-0," Danny said. "This is my daughter, Grace, and if you're NCIS, I'm guessing you're looking for my partner."

"McGarrett's your partner?" DiNozzo asked.

"Uncle Steve and Danno can do anything," Grace said. "But they're on vacation this week." She dropped her suitcase and bounced over to the rollaway cot. "Danno, is this for me?"

Before anybody could reply to that, DiNozzo and McGee's eyes shifted to the door behind Danny.

He turned to see another agent standing there, this one near retirement age.

"Boss, this is McGarrett's partner and their little girl, Grace," DiNozzo said. "We haven't told him yet."

Danny started to correct DiNozzo about Grace, then the second sentence registered.

"Told me what?" he asked, looking at each agent in turn.

"DiNozzo, McGee, why don't you three go out in the hallway. I'll stay here with Grace and her new friend," said the man DiNozzo called Boss. Danny wanted to object to leaving his daughter with a stranger, but he had a bad feeling that there was a reason they wanted to talk to him without Grace nearby.

"Grace, do you mind staying with..."

"Agent Gibbs," the man said.

"With Agent Gibbs, while I go talk to the agents for a few minutes," he finished. "They just need to talk to me about Uncle Steve."

"OK, Danno," she said.

Danny followed the two agents out of the room and and halfway down the hallway. "What happened to Steve?"

"Commander McGarrett was beaten a few blocks from here," McGee said. "He's over at University Hospital now. We're investigating."

"You're looking for at least three men, or somebody with a stun gun," Danny said. "The only two times I've seen Steve taken out in hand-to-hand in four years of working together was when he was knocked out with a stun gun."

"Working together?" DiNozzo asked.

"Like I said, Hawaii 5-0," Danny said, then realized they wouldn't know what that was. "The governor has a task force, and McGarrett heads it up. There are four of us — the other two are cousins, Chin-Ho Kelly and Kono Kalukaua."

McGee, who hadn't said much up until this point, looked at him. "When you said you and McGarrett are partners, did you mean work or-"

Danny threw up his hands. "Work partners, just like you two," he said. "We are not married, no matter what anybody says. I do not have the type of death wish it would take to be involved with that crazy Neanderthal." He shook his head. "So, how bad is it?"

"We don't know yet," McGee said. "We just caught the case about an hour ago, and we wanted to come here and see if we could figure anything else out before going to see McGarrett in the hospital."

"That was your first mistake," Danny said. "The goof won't stay any longer than he has to, so if you want to catch him before he forgets we don't have full means and immunity in Washington, you'd better get over there."

"Full means-" DiNozzo started to say.

"Governor's task force," Danny said. "I don't know what the DC equivalent of a shark tank is, but if we don't get to Steve before he checks himself out - and if he knows who did this - he's going to be interrogating them in ways that will probably prevent the case from ever coming to trial."

"Shark tank?" McGee asked.

"Trust me, you do not want to know," Danny said. He turned and headed back to the room.

"Hey, Gracie," he said. "Uncle Steve got in a little bit of an accident, and they had to take him over to the hospital. So let's say we head on over there and make sure he doesn't do something silly, all right?"

"Can Agent Gibbs come with us?" Grace asked. "He's really nice. His daughter Kelly played softball, too, when she was my age."

"Sure, Grace," Danny said. "Maybe Agent Gibbs can even give us a ride, since he knows where we need to go."

Gibbs stood and headed out, the other two falling in behind him. Danny made sure he had his card key, then let the room door lock behind Grace. He only hoped they would get back here sometime tonight.

The car turned out to be a government-issue navy sedan, and Danny watched as Grace got into the back seat between DiNozzo and McGee. He turned to Gibbs. "How old is your daughter now?" he asked Gibbs.

"She was eight," Gibbs said. "Grace reminds me of her."

At the past tense, Danny's hands tightened on the roof of the car. "I'm sorry," he said. Danny sat in the passenger seat, silent. He couldn't even imagine what he would do if something happened to Grace.

Fortunately, his daughter didn't notice he wasn't his usual talkative self because she was too busy being entertained by the other two agents in the back seat. He only hoped they were helping her forget where they were headed.

Danny wondered again: Who and what could have taken down Steve, and why?