Hades
Was that why she was old? Was it taking her energy—therefore her youth?
"What does that mean?"
She ignored the question.
Her fingers twitched, almost unconsciously, as if remembering the ache of something unseen. "Eve… she doesn't just survive it. She's untouched by it. No mark. No toll. That's the difference. And Darius knows it."
"Then why did he let her go?"
"…Over the years, he's stocked up on her blood, marrow—anything that might be used to replicate her immunity. He kept her alive because, as long as he had her, he had the key to his own survival."
Her voice didn't waver, but there was something in it that made my jaw tighten.
"It wasn't enough to just bleed her," Ellen said. "The cells he needed weren't always present in high enough concentrations, even with the wolfsbane he had her injected with twice a day—so he learned to force them."
I stared, not yet understanding.