“That’s what I said!” my uncle called, presumably from the driver’s seat. “But Daniel said that inaccuracy is probably due to the fact that they usually do breed with human women for the simple ease of availability.”

“But it’s a bit of a trade-off,” my dad added. “Humans have trouble carrying incubi babies—”

“Yeah, we’ve noticed,” I said, thinking of both Farrah and Danica.

“—and even if they manage to give birth, the baby won’t live more than a few minutes without a soul.”

“Aren’t babies born with souls?” I asked, thoroughly confused.

“Evidently not incubus babies,” my uncle said.

“Okay, so how would a baby incubus get a soul?” I asked, far from sure I actually wanted the answer.

“Well, if the mother dies before the umbilical cord is cut, the baby just kind of…inherits its mother’s soul. That’s what happened with Charles’s mother, although your uncle and I are far from convinced that this poor bean sidhe just happened to die the moment after she gave birth. She wouldn’t have had the same trouble carrying an incubus fetus that a human woman would have.”

Meaning that Daniel had killed the mother of his child, to keep the hard-won infant alive.

I stopped pacing in the middle of the living room, one hand over my eyes, trying to block out that mental image. “That is beyond messed up!”

“What’s messed up?” Emma demanded, and I spared a moment to be grateful that she had decided on her own not to meet with Beck.

“It gets worse, if the mother’s human,” Uncle Brendon called over the traffic noise.

“Worse, how?” I asked, pacing again before I’d even realized my feet were moving.

“A human soul can’t sustain an incubus body,” my dad said, and I could hear the reluctance in his voice. “So if the baby is born from a human mother, there has to be some alternate source of a soul. And it needs to be ready and waiting, if the baby’s going to survive.”

Thoughts spun through my head fast enough to make me dizzy, and I struggled to bring all the facts into alignment. To make sense of the chaos.

Danica and Farrah were both human mothers, so how had Beck intended to keep his children alive after birth? Danica hadn’t made it very far into her pregnancy, so he’d probably thought he had plenty of time to find a soul for her child. But souls can’t be stolen from the living, which meant he must have been prepared to kill some poor nonhuman to donate his or her soul to his son.

And suddenly I was very, very grateful for the dissimulatus bracelets Harmony had given us, which had protected me, Nash and Sabine from notice.

Except that Sabine had read Beck’s fears and creeped him out.Had he figured out she wasn’t human? Had we painted a target on Sabine by sending her in to investigate? Would Beck be reluctant to leave Eastlake, if he knew there was at least one supernatural soul up for grabs there?

“Kaylee?” my father said into my ear, but I was too lost in my own thoughts—still pacing frantically—to answer.

What about Farrah? Her pregnancy had progressed the furthest, thanks to Lydia, and in two short months, he’d have to…

“Oh, hell,” I whispered, as another little bit of understanding clicked into place in my head.

“What?” my dad asked, as Tod and Emma watched me expectantly.

“Lydia…” I dropped into the recliner, and hardly noticed Styx’s squeal when I landed on her tail. “It’s no coincidence they were rooming together.”

“What?” my dad repeated over the phone, while Tod echoed the same question from the couch. But Dad didn’t know about Lydia, and Tod and Em didn’t know incubi babies were born in need of a nonhuman soul. I was the only one with all the pieces of that particular puzzle.

“I just…I think I figured out where Beck was planning to get a supernatural soul,” I said into the phone.

“It’s not…?” my dad started, obviously unable to actually say what I knew he was thinking.

“No, it’s not me. He still thinks I’m human, thanks to the dissimulatus.” I held my arm up to study the braided fiber that had kept me off Beck’s radar—until I’d offered him a three-way with me and Em. “But I think he knows something’s off about Sabine, and one of his earlier victims had a syphon for a roommate.” And suddenly any doubt I’d had about the wisdom of breaking Lydia out of Lakeside was gone. Tod and I had saved not just her life, but her soul.

I wondered if Beck knew yet that his backup soul had flown the coop….

“In case it isn’t obvious,” my dad said. “I do not want you and Emma to go through with this idiotic plan to get your teacher alone tonight.”

“It is obvious. And don’t worry, we’ve already called that off. In fact, I think Emma should stay the night here, just in case.”

“Good idea,” my dad said, and Uncle Brendon piped up with something I couldn’t quite hear.

“What’d he say?”

“He said you should try to get the rest of Emma’s family out of the house tonight, too, just in case.”

Especially considering that Beck had a track record of feeding from his victims’ mothers, and Em’s mom had been alone with Em and her older sisters for as long as I’d known them. The Marshall house was practically an incubus buffet.