So, as with all my snap shots, its out of order. I'll file it into place some time soon. So this is when Liv is 18, going to senior prom. The year is 2024. (liv-18, elliot-15, jeff and doug-13, dylan-11, house is...well...old.)

I made a few spelling changes, some grammer mistakes were fixed. My mom usually beta reads for me, but she worked night before last, and hasn't had time. (Something about living 3,000 miles away...)

"How do I look?" Liv asked.

For Gregory House, time stopped.

The royal blue dress she and Allison had picked out suited her perfectly. It brought out her eyes, and her smile drew him in. She looked so grown up. Greg looked down .

"You look perfect, Olivia." She smiled brightly. Her date, Walter, had gotten his tie to match her dress, and even hired a limo to chauffeur them to the prom. He'd grown up, too, since they moved into the house next door. Greg had already read Walter the riot act about here he could and could not put his hands that night, and followed up with where every other body part belonged if he were to want to graduate in the following weeks. House expected a 'Yes Sir' type of response. What he got was, "I respect Liv too much to take advantage of her. Prom night should be perfect, and that includes parental approval."

"Dad," Liv groaned.

"My only daughter is going to prom, I'm allowed to feel old." Liv hugged her dad, kissed her mother's cheek and took Walter's arm. "Olivia," he called.

"Yeah?"

"You look beautiful. Have a good night." Liv grinned and closed the door behind her.

"Greg-"

"Not Now, Cameron." Allison froze. "She's grown up. How the hell did it happen so quickly?"

"That's how it happens."

"She's only 18. Before that she was only 17," he said, sitting down.

"And before that she was 2, driving you nuts with questions. Or 3, driving me nuts torturing Elliot."

"Or 6," he laughed.

"Still can't believe she was expelled from first grade." They laughed at the memory. She'd brought a medical book to school, not knowing it was House's Lupus text book. Imagine their surprise when the principal called about their 6-year-old and Vicodin.

"Are you okay?" Greg asked softly.

"More and more every day, she looks like Stacey. But, House, she's Greg, version 2.0. Look at her eyes. She's so sure of herself, and so talented. She's not Stacey. She's not you. She's Olivia."

"Olivia Madison."

"And I think its a damn good thing."

"You know, Allison," he said, taking her hand and pulling her into his lap. "She reminds me of you some times."

"How?"

"Well," Greg started. "She gets annoyed with me over the same things you do. And her smile-"

"Its not my smile-"

"I feel it in my heart the same way I feel it when you smile, when the boys smile." He looked over at her and smirked. "Foreman was wrong."

"Huh?"

"Foreman said she would never be your daughter. She's more your daughter than mine," Greg said, tucking a lock of his wife's hair behind her ear. "She laughs the same way you do. Cries over the same crappy movies...loves the same kind of chocolate. She definitely makes coffee as good as you." Allison snuggled back into his arms. "And she wears blue as well as you-"

"Hey, that's the eyes."

"Allison, there is something about her that I see in you. I don't think I have ever tried to name it, but she's your daughter, as much as the boys are your sons."

"I know what it is," Elliot said from the top of the stairs where he could hear without being seen. The lanky 15-year-old stepped into view. "Mom," he said, sitting on the bottom step. "I know who he was."

"Who?"

"Brian."

"El-"

"You were in-love with him, same age as Liv, and you were going to have a fantasic life with him." Allison wiped a tear from her face. "You are her mother because she needed you to be. You were alone, Dad was alone, and Liv was alone. You stepped in, and decided that she needed you, he needed you, and more importantly, you needed them. You told me once, that your first date with dad ended badly. He said 'You don't love. You need.' He's half right. You need love. So, you shared it with someone who didn't have anyone; Dad. You love Olivia because you love. You're her mom because you had to be, because no one else could be. Don't let blood take it away."

"We never have."

"How did you know all this?"

"I pay attention." Elliot looked at his hands. "I...uh...I met Stacey once." Allison stood to walk out of the room, saying her head hurt, and she didn't want to talk about Stacey.

"Go on," Greg said, when the bedroom door closed.

"She and her kid were in the mall near the hospital. I didn't know who she was at first, but her kid...she looks just like Liv, and I knew that Mom wasn't her biological mom. We talked...had a cup of coffee."

"Elliot Gregory-"

"We were just hanging out, Dad. My friends and I were just hanging out, and Will pointed out the kid, who looked like Liv. I didn't know who she was, but she looked over at me, and we both knew. The other three have no idea, other than what you told us. Layne isn't too bad. Nothing like Liv. She's really sad," he said, looking up at his father. "I mean, really sad. They'd lived in Montana a year or so, but came back because Stacey wanted to see Liv again. Layne hardly said anything." Greg sighed. "Is there any chance that she's yours?" Elliot asked, eyes filling with tears. "Can she live here, too? So maybe...she won't be sad?"

"No, she's not mine. I was already married to your mother when she was conceived. Her father died before she was born. Mark Warner."

"Oh," he breathed.

"Layne's depressed?"

"She looks like Liv's twin. She could be her twin, Dad." Elliot met eyes with Greg. "You don't know when she was born, because Stacey wasn't around-"

"Its on the birth certificate that Olivia wasn't a multiple. Single birth-"

"She has blue eyes."

"Not a factor; Stacey's mother had blue eyes. But I will look into it." Elliot nodded. "Don't tell your mother about Layne. Not just yet."

"Why not?"

"Court was really tough on us. Keeping you guys out of it was a lot harder. When Liv finds out she has a sister, she'll tell us when she's ready." Elliot nodded.

"A blood test isn't-" Stacey started, her lawyer holding up his hand to silence her. "She's Mark's daughter. She was born in December of 2007. I have the birth certificate."

"Not good enough," House's lawyer said. "My client has discovered that your daughters look more alike than most sisters. He wasn't there when they were born, He isn't sure."

"What are her allergies?" Greg asked. Stacey's jaw fell. "Does she have any allergies?"

"Um, Amoxicillian...lavender...peaches-"

"Four of my five children are allergic to peaches."

"Four of your five children have Allison as a mother."

"Olivia is allergic to peaches. I'm allergic to peaches. Isn't that grounds for a blood test?" Stacey went white. "So? Am I her Father?"

"No."

"Then why did I find out about her only a few days ago? Why didn't you tell me there was another kid?" Greg was furious, and she could understand. "Was it because I'm not her father or because I am?"

"She's Mark's daughter!" Stacey thrust a picture into his hands. Greg studied it carefully. He could see Stacey's smile and chin, Stacey's mother's eyes. No hint of Mark or House was there. "But if you insist, we'll do the damn test. If she IS Liv's twin, she's 18, and can choose where she lives. If she's not, she's 17 and stays with me, and there is still nothing you can do about it."

"Well, we'll know soon enough."

The ball bounced from the wall of the office back into the thrower's hands. He was having a rough day. The envelope on his desk was sealed. He was afraid to open it, for fear of what was inside. If Layne was his daughter, he'd still never see her. But maybe...maybe she'd want to see him. Maybe they could build a relationship and he'd have two daughters who loved him. That thought scared him.

But what it would do to his wife scared him more. It would confirm that Liv wasn't her daughter. Liv's twin lived with their mother. It would destroy her.

And if it was negative, things would stay the same for Allison and himself.

Liv would feel another blow, finding out her mother threw her away, only to go out and have another baby. Greg knew it had hurt her when Stacey stopped fighting, even though she never said anything about it. The tear stains in her pillow spoke in volumes. She'd been kicked aside again.

The file almost stared at him.

"House?" Wilson called into the office. "You're pondering."

"So?"

"You don't have a case."

"Again...so?"

"Are you okay?" House made a face that told Wilson he didn't know what to think anymore. "What's going on?"

"Stacey has another kid," he answered, handing off the picture he'd kept.

"Oh...boy. How is Cameron taking it?" House gave a shrug. "So you didn't tell her? Did you tell Liv?"

"No, and I'm not going to unless I have to."

"When do you find out?" House glanced at the papers.

"If I read that, my whole world is going to change...again. This is going to kill Allison or Olivia. Either its positive and Allison faces another bit of proof that Liv's not hers, or Liv feels like shit because her mom tossed her aside to have another kid. Either way, one of the two most precious people in my life is broken."

"So," Wilson said. "Don't read it. Forget you know anything about her."

"Are you insane? One day. Liv is going to find out about her, and then hate me for lying to her."

"And one day Allison will find out that you never read the results to find out who's kid Layne is. She'll be even more pissed off." Greg threw the ball as hard as he coul, It bounce off the wall, and crashed into a picture frame.

"Don't you think I know that!?" he yelled. Wilson picked up the folder. "What are you doing?"

"Making it easier for you." He opened it and pulled out the papers before House could reach him to stop him. "House, she's yours."

"Seriously?"

"No."

"Give me that." House took the papers. "Her last name, Warner, remains intact."

"That's what you wanted, right?" House nodded. "You don't have to tell them, you know. Allison will understand, and so will Liv."

"Jimmy, take this to your office. Shred it. Take what is left of that, and shred the pieces."

"Yes, House, and then we'll burn the mulch left over. Have a tribal dance and everything." House glared at him. "Relax," Wilson said. "Your secret is safe with me."