“She has to be Dad’s.” I give him a second to process that. “I don’t think Mom’s ready to deal with that.” Not that I can blame her. “But your test results are an official part of the police’s attempt to ID Lullaby, so I don’t think this is going to stay quiet for very long.”

“Shit. That’s what the Crimson Cryer was talking about. Somehow, that asshole got ahold of my test results and thinks that means you must be the mother.”

“I guess so.” Honestly, I’d forgotten about that tweet after my mom’s bombshell.

“I can’t believe he would cheat on her. I can’t.”

I shrug. “Things were tense there at the end.”

“Because he was using, not because he was cheating.”

“We don’t know that, Penn.”

“Well, if he was, Mom didn’t know about it.”

“Or she didn’t want to admit she knew about it. Even to herself.” My coffee has grown cold, but I drink it anyway.

Penn frowns, and I can practically see his train of thought derailing, as his hand clenches around his mug handle. “So, if Dad is Lullaby Doe’s father … who’s the mother?”

“That’s the million-dollar question. I told Mom that it was probably a teacher, rather than a student. That she might have hidden the pregnancy, because of the affair. But I’m not sure that really holds water. If she’s married, she could have told her husband the baby was his. If she’s not … no one would really care who the father was. At least, no one would come right out and ask. And even if she were hiding the pregnancy, why would she give birth in the locker room? Why not call an ambulance or drive herself to the hospital?”

“Also, someone would have noticed if a teacher just disappeared in the middle of the school day.” Yet Penn still looks unconvinced. “If Dad was sleeping with a high school student, there definitely would have been rumors.”

I can only shrug. “There weren’t any rumors about a pregnant student, other than Lilly.” I groan with a sudden realization. “Penn, they’re going to start asking questions. They’ll probably start with our friends.” I fold my arms on the island and lay my forehead on them. “The police are going to ask my friends if they ever slept with my dad! Not that I have many friends left …”

Penn puts one hand on my shoulder. “No they won’t. The investigation is over. They’ve released the body, so the police are no longer looking for a next of kin. Which means that as messed up as this is for us, chances are good that no one else will ever know.”

“I really hope you’re right.”