"I thought I'd catch you here." House waltzed into the lab. Thirteen looked up from the microscope she was using. She glanced over at Chase who was seated across from her and then back at House.

"You did send us here." Thirteen rolled her eyes. Chase went back to what he was doing.

"And what are the results?" House pushed the notepad to her left in front of her with his cane.

"I've only been in here for three minutes. I need more time than that." Thirteen pushed the note pad away from her.

"Huh, I thought three minutes was pretty standard." House shrugged and walked out. Chase shot her an odd look and Thirteen shrugged. Then she realized she had completely forgot about her fake phone calendar appointment. Today was her pseudo pregnancy test and House completely bought it. She wondered how he hadn't found out about the fact that she had a girlfriend, who once went on a few dates with him, and two kids.

"There's no way." Thirteen mumbled.

"What? What do you see?" Chase came over immediately.

"Never mind, just a scratch on the glass." Thirteen lied. Chase looked a bit annoyed that he had gotten up, but quickly went back to work. Thirteen pretended to be looking at a lab print out, but she was thinking about House. There was simply no way he hadn't caught on. He was the master at finding out secrets and she always seemed to be his favorite one. There was a chance he thought she was secret-less now after learning about her brother and jail. After all, few people could have even more secrets after that. But, House was too good. Something had to be distracting him.

"X-ray film is back. There's a mass in her neck." Taub said, entering the lab.

"Do you need me to scrub in?" Chase asked.

"Yeah, Thirteen you may as well come in too." Taub answered.

"So glad to know that I'm such an integral part of the team." Thirteen rolled her eyes at him and quickly began cleaning up her station.

She followed Taub into the OR while Chase went to put on a pair of scrubs. She had realized she and Cameron smelled alike that morning and had put on a pair of starched, sterile scrubs to hopefully throw House off her scent.

She washed her hands before entering the surgical room, and took a spot opposite of Taub who was opening the patient up with one of the surgical Attendings.

"Careful of the jugular," the Attending was saying. Thirteen leaned in to get a good look at the mass. She leaned her head over just in time to be caught with a vicious squirt of blood. She immediately jumped back and Taub and the attending dove in to stop the blood.

Thirteen set up another unit of blood to transfuse. She finished just as Chase entered. He took a look at her and frowned.

"We got it." Taub called out. Chase took over where Thirteen had been standing.

"I'm going to go change. I'll meet you back up at diagnostics." She mumbled, pulling the sticky material of her shirt away from her body. Her fingertips were quickly moist with blood and she began to breathe through her mouth. The last time she had been this soaked with blood it had belonged to Kutner.

She took off down the hallway and then the stairwell.

Thirteen slammed open the door to the locker room, pealing off her blood soaked shirt before even reaching her row. She felt disgusting. For some reason arterial spurts creeped her out more than any other type of mess. She'd been vomited on too many times to count and even peed on once or twice by an infant patient, but she hated having blood on her. Perhaps because more often then not, if a doctor was met with an arterial spurt it meant the patient was met with death. She knew her patient would be fine, for at least the next week or so, but she still felt like she was covered with death.

She tossed her scrub top in the trash bin, there was no saving it, and rushed to change so she could get back to the next DDX session. She rounded the corner to her row, but someone was already in her locker.

"Excuse me?" She asked House. He turned around and stepped aside, not even looking at her. His face was buried in her phone. She spent a second mentally debating whether to yell at him, grab her phone, or change first. Though she'd probably have more of his attention in just her bra, she knew she'd sound more serious with a top on. She quickly grabbed a fresh scrub top and slid it on before trying to grab her phone from his hand. He held it behind his back. Thirteen frowned and put her hands on her hips; she was not amused.

"I knew you weren't pregnant." He said with the type of nonchalance usually reserved for talking about the weather, or Cuddy's breasts.

"What?" Thirteen asked, feigning ignorance.

"You had a pregnancy test today with Marsden, but I hacked into Marsden's computer and your appointment was cancelled. At first I assumed it was because you figured out that you weren't pregnant, but then I went farther into his files. You never even had an appointment." House explains.

"How do you know about my appointments?" Thirteen asked, though she knew.

"Don't play dumb with me. You knew I downloaded your calendar from the moment those condoms hit the table. You had me going for a while, touché." House said, handing back the phone.

"Don't mess with me." Thirteen said, throwing the device into her locker. House turned to leave, but then slowly spun around to face her again.

"Don't even bother hiding secrets from me." House said. Thirteen froze, how much did he know?

"Lies of omission are only lies when you're omitting them from someone who should know." Thirteen raised an eyebrow. She needed him to lie out his master plan or lecture her or something.

"Save me from having to stalk you for the next few days. The picture on your phone of a little girl in a blue dress – daughter, niece, cousin…child porn?" House said.

"Child porn." Thirteen nodded.

"While here's the thing. She looks just like you. She's at least eleven and you were born in the eighties. I'm guessing she's not yours because I've snooped through your house once or twice in the past, but you're definitely related. But here's the real kicker. Thirteen of your last sixteen text messages are from Cameron." House smirked victoriously. "I don't miss things."

"I was topless when I walked in here," was the only thing Thirteen could think of to say. He had won.

"You and Cameron are doing it. I have enough jerk off material for months." He shrugged before walking out.