When Mulder saw his son sitting with his adoptive parents in the lounge of their faux family home, his heart broke and his stomach was churning. He looked happy, he seemed to be perfectly calm and like any other healthy baby. Mulder dropped his head for a second to clear the content image away. He couldn't start thinking of this as a mistake. Those weren't the kind of people who should be raising anybody's child, and certainly not Mulder's.

As he moved to step away from the window before ruining everything before they'd even started, he felt a sudden urge to look back, a connection – his son. William was staring at Mulder, and then he smiled before resuming playing with his toys, almost as if he knew that he couldn't let his 'parents' know that something was going on. Mulder grinned to himself. That was his boy.

Back in the van where the Lonegunmen were waiting to make their getaway, Mulder got back inside and sat quietly for a minute just thinking. Everybody stared at him and still he didn't move. He was thinking about that knowing smile, somehow – William understood, and Mulder had a new leap of faith that maybe this would end how he hoped it could.

"Mulder? Did you see him?" Mulder nodded his head.

"Yeah. I did," he smiled at Frohicke as Byers and Langley put the last touches to their costumes. They were the diversion. It may not have been a particularly complex plan, but the old routine of divert and escape was the safest way to get William without risking too much.

Mulder sighed and pulled himself together. His face changed from that of proud doting father to the FBI agent that had worked so hard over the last decade to protect those that he loved. This was the final chapter.

As Byers and Langley moved to exit the van Mulder held them both back.

"I know that you won't let me down, but I just needed to say – don't screw this up," Langley nodded and Byers smiled.

"We won't. Are you ready?"

"As I'll ever be," they opened the doors at the back of the van and all jumped when they saw Doggett and Reyes standing on the other side. They all piled back into the van and Mulder stared at their new occupants.

"What the hell are you doing here?"

"We came to help. You're an ass if you think you can do this alone," Mulder looked at Reyes and almost had to work at holding back a smirk at her calling him an ass. He hated to admit it, but he was glad of the support. Even from Doggett.

"Fine. Agent Doggett you come with me, Agent Reyes, go with Langley and Byers, a females face at the door might go a long way to keeping their suspicions lowered a little longer," they all set about moving out to their various positions, nobody really stopping to think that this could be the last time they see each other.

Doggett gave Reyes a quick glance and she smiled at him. She was full of confidence and a sense of duty. It was one of the things he loved about her the most. And when all of this was over, he could spend the rest of his life assuring her that he'd never let her go.

Mulder led Doggett to a quiet spot he'd found at the back of the house, they were waiting to hear that the front door had been opened before making their move.

"I hate to point this out, but we're dealing with a super soldier here right?" Mulder nodded, "well, isn't there a pretty good chance that they know we're already here? That they've known about this all along?"

"They're powerful Agent Doggett, but I don't think they're psychic."

"How can you be so confident in our ability to remain here unseen? After all the things you've seen the government are capable of, what makes this different? What will stop them from just coming out here and killing us all?" Mulder looked at Doggett for a second and then looked away to retain focus on the door.

"Because they have my boy in there. And no matter what they want to do to us, they can't risk losing him. We can't risk that either," Doggett tried to understand the logic, but he couldn't help having a bad feeling about this. He'd had it the second he and Reyes had left her apartment. And now, as Mulder gave him the nod that implied their comrades had drawn William's adoptive father to the door and it was time to go inside, he still had a bad feeling about it.