A/N Inspired by the particularly full lower lip on the talented Tyler Young (Philip on Eyewitness- a show I highly recommend!) and it's similarity to the beloved pout of Sean Murray.

This crossover probably isn't what my lovely NCIS readers would like most to see me posting, but at least I'm leaning back into that world. Ya'll probably know I'm not a McDee fan, so even though this is set post House Rules, I don't have Delilah in this, nor do I plan to except as something in the past.

Stories get lost when listed as crossovers, so I'm going to try switching this one back and forth between the two fandoms with each chapter and eventually put it in crossovers, I suppose. Also, I intended this to be a short oneshot but I have fallen in love with Eyewitness and Philip and Lukas so I'm continuing it. No idea of timeline for posting since I'll write as I go. Please be patient!

Chapter One

"McGee needs to know about this," Abby Scuito, forensic scientist extraordinaire, said to Gibbs, the head of the top NCIS investigative team, looking to him to make everything right.

"You shouldn't have been intercepting his voicemail, Abs," Gibbs replied.

"I was just testing that piece of cloning equipment to see if the guy from the Matthews case could have done what we thought he did! Tim knew I was working on that-"

"Gimme the information on the hospital."

Upstairs, Gibbs called Timothy McGee, his team's tech expert and jack of all trades, into the elevator, stopping it between floors.

"What's up, Boss?"

"That call intercept doohickey you and Abby were working on works."

"Okay. So Matthews might have been telling the truth that he never-"

"She intercepted a call to you."

"Oh."

"From Metro. They have a guy with amnesia who shares your genes."

McGee frowned. "A cousin, maybe? I-"

"Closer, they said. He's about 19 or 20."

Tim shook his head. "I don't know who that could be."

"You should go see."

"Yeah, okay, Boss."

~~NCIwitness~~

Tim entered the hospital room to see a stranger. He was a young man with wavy brown hair, and, when he opened his eyes, they too were brown.

"You another cop?" The boy asked.

"Well, I am, but not on your case. I was notified that when they ran your DNA, they found a close familial match to me, but I'm sorry to tell you that I can't shed any light on who you are."

The boy sighed. "Damn."

Tim abruptly made a decision. "But we are somehow related, and closely, so I want to help you."

Frowning, the boy looked suspicious. "I'm a total stranger."

McGee shook his head. "No. Apparently, you're family. When are you being released?"

"They wanted me out this morning, but one of the nurses "lost" some paperwork so I could stay."

"Well, let's see if they can find it and you can room with me while we figure out who you are. I'm Special Agent Timothy McGee, NCIS."

"NC- what?"

"Naval Criminal Investigative Service. We investigate crimes involving the Navy and Marine Corps."

"Huh. Okay. They've been calling me John."

"You can call me Tim. In all likelihood I'm probably a cousin or brother to you."

John side-eyed him. "Or...father?"

McGee froze. He didn't feel old enough to have a teenaged son, but thinking back, he realized it was possible.

"Pretty unlikely since I've always been careful about condoms, but..." Tim shrugged uncomfortably. "I'll go talk to the staff, okay?"

John bit his lip but nodded. It seemed the best option he had.

As soon as McGee got into the hallway, he texted Abby.

From Tim: Could you run the John Doe against my mom and dad's DNA please? I'd like to know if this kid could actually be my half-brother or (long shot) my son.

From Abby: OMG, yes I will. Does he look like you?

From Tim: I don't know... Brown hair, pale skin, but dark eyes and maybe shorter than me.

By the time he had arranged for John to be released into his care, Tim's phone had buzzed several times.

From Abby: Metro sent a picture with the DNA file! Look at his bottom lip!

From Abby: Don't deny it. He has your lip.

From Abby: I'm running the comparison now.

Tim started to help John get dressed, only then finding out that he'd been stabbed during the mugging that had left him sans memory. Tim ran down to his car and grabbed his go bag, returning and finding that his clothes were loose on John, but fit okay.

"Okay, so I'll pull my car around while they take you downstairs," McGee said.

As he went to do as he'd said, Tim thought back to the handful of girls he'd slept with while getting his undergraduate degree in college. Could one of them be John's mother?

He eliminated two he'd known for years afterward, but that still left two more, including the one night stand during which he'd lost his virginity. The girl had been a younger sister of a guy on his floor. Annie, he recalled, although a last name eluded him. They'd both been the only shy, younger kids at a party, and had gravitated toward each other. He'd brought her to his room to talk and they'd ended up fumbling through both their first times. Her brother had transferred later that semester and Tim had never heard from her again. He tried to recall details of the encounter and while he knew they'd used a condom, and that it had been over embarrassingly fast, he had no recollection of any problems that might have reduced the efficacy of the prophylactic.

He shook his head and got John into the Prius and headed to his apartment.

Getting the young man situated in his guest room, Tim was glad he'd moved to a larger apartment so that he had an actual bedroom to offer him instead of just a couch. Some of the clothes from his really skinny days fit John better than his go bag stuff, so they had that covered. It was uncomfortably quiet as they moved around one another.

"I feel like I should ask you about your life to try to figure out how we're related," Tim confessed as they sat down to a pizza he'd ordered.

"Believe me, I'm even more curious than you are."

"Yeah."

The doorbell chimed.

Tim went to answer and the very serious look on Abby's face told him what she was there to reveal. He swallowed hard.

"Can I meet him?" She asked.

McGee introduced them.

"Oh my God! You guys look so much alike!"

The men exchanged looks that agreed that they didn't think so.

"Abs, I think you need to tell us."

"Yes! Right! Okay, so there's an extended family match to Admiral McGee and your mom, Tim."

It hit him like a gut punch, even though he'd suspected when he'd seen Abby's face. John was his son. He had a grown son for whom he hadn't been there. He'd missed everything from taking care of Annie through all John's growing up and school and who even knew what all. It was heartbreaking, and Tim closed his eyes against the hurt.

"Wh-what does that mean?" John asked.

"It means that somehow, you're my son."

John turned pale and stared at him.

"And I have more," Abby said. They both looked at her warily.

"They didn't run your sample against people who are deceased, but I did."

John swallowed audibly.

"Your name is Philip Shea. Your mother Anne died two years ago. I'm so sorry."

Tim and Abby held their collective breath, but they didn't see any recognition in Philip's face. Sometimes a name was a key to memory recall, but it looked like they weren't that lucky.

"Annie. We were sixteen and I never saw her after the one night we had together. I'm sorry, John. Um, Philip," Tim said softly. "Your name is...pretty unique. We should be able to find out more about you pretty easily. Do you want me to search now?"

Philip nodded, and Tim grabbed his laptop. In minutes, information poured out.

"You grew up in Queens, in New York City. After several drug incidents with your mother, you went into foster care in Tivoli, New York. Helen Torrance and Gabe Caldwell are your foster parents. And you..." Tim cut off when he found Gabe's Facebook page with pictures of Philip and a tall blonde boy. He smiled. They looked incredibly happy. He turned the computer. "It looks like you have an adoring boyfriend."

Philip stared at the screen, reaching out to scroll through the pictures, frustration twisting his features.

"Why can't I remember them?" He cried, then fell back into his seat and buried his face in his hands.

Abby rushed to him and hugged him, always the emotional comforter.

"Philip, I'm sorry. There was so much blood loss that your brain was starved of it for a while. That's what seems to have caused the amnesia," Tim said as gently as he could. "But memories can return in an instant. Please...try not to worry."

The boy shrugged Abby off and rose, heading for the bedroom.

"Philip, I'd like to call your foster parents if that's okay," Tim said.

"Yeah. Go ahead," Philip muttered, then went into the guest room and shut the door.

Abby turned her physical affection onto Tim, who patted her back and suggested she go.

"Timmy, you have a son! I'm here for you. You know that. Finding out I was adopted and meeting my biological brother Kyle and getting to know him... I really do understand, alright? Please call me if you want to talk."

"Yeah. I will. But every minute I talk with you is another minute his family is worrying-"

"Oh! Call them! Tell me how it goes."

He saw her out, then called Helen Torrance.

"Oh thank God!" She exclaimed when he explained the situation. "Lukas is still in DC and he's frantic! Gabe and I are on the way, but please let Lukas see him. They're really important to each other."

"Send me the number and I'll call him right away."

One call and half an hour later, there was a pounding on Tim's door. He opened it to the blonde young man from the Facebook pictures.

"Lukas, hello, I'm Tim. Philip is-" he gestured toward the guest room door and the tall young man pushed past him and flung it open. Tim followed and watched in fascination as the sight of his lover brought Philip's eyes alight. He could practically hear the memories popping back into Philip's consciousness.

"Lukas!" Philip shouted. He winced as he jumped up to hug his boyfriend.

Tears filled Tim's eyes as he watched them hold each other, and listened to the disjointed reunion.

"Was on my way to the arena and-"

"-looking for you...so scared..."

"I couldn't remember anything!"

"Shh, shh, I'm here..." Lukas started crying, his whole body shaking, and Philip wrapped him up tight.

"It's okay it's okay..."

It didn't take long for Lukas to get ahold of himself.

"Hey, man, you wanna hear the crazy part?" Philip asked. Lukas nodded.

"Tim here," he gestured behind the tall boy, and they both turned to look at McGee, "is my father."

"What?!"

"They tested my DNA and-"

Lukas moved aggressively toward Tim. "Where were you all his life, huh? Do you know what he went through growing up? You just abandon your kid and now you think you can-"

"Stop!" Philip's voice cut through Lukas' anger and he looked over his shoulder at the boy.

"I never knew. I found out six hours ago, Lukas," Tim said softly.

Lukas looked back and forth between them, then turned his focus back to Philip.

The boys hugged each other again, and Tim backed out of the room, closing the door.

His son. He had a son.

Tim smiled.