Stein's own labcoat was stitched together from different coats of slightly different fabrics. He wasn't concerned with that, but just wanted Birkin to see what he had to show him.

"I'm really not worried about that," he said, settling the body on its side. "If she could possess me, I'm sure she'd have done it when I first killed her. I think she needs a weak host - an animal, child, or a vegetable like this one. My own soul is far too strong for her to dominate so completely."

He let go of Birkin and parted the girl's long hair with his fingers, revealing a very tiny incision right below the hairline. "Paralysis agent," he said smugly. "I can trigger it remotely."