But having spent too much time with killers, Vince couldn’t help thinking, How did she know he hadn’t given her a phony name? As he followed her into the back of the building, why would she think she wasn’t in danger just because he was friendly, had a sense of humor, apologized for frightening her? It only took about four minutes to strangle someone to death. He could have done the deed, left her in the back of the store, and walked out via the alley. No one would have been the wiser.

She opened the overhead garage door and sunlight spilled into the dark space.

“As you can see, there’s plenty of storage space back here, and easy access for delivery trucks.”

“And another door over here—”

“To access your parking spaces. I’m afraid there are only two. That’s the only drawback to being on the plaza—the lack of parking. But the pedestrian traffic more than makes up for the inconvenience.”

The door also led to Peter Crane’s parking spaces, Vince noted. Karly Vickers could have come out the back of the dentist’s office, been grabbed and dragged into this storage space. No one could see back there from the front windows of the vacant building. The walls of the building were brick with a thick coating of old-fashioned plaster—virtually soundproof.

Vince walked around the empty space looking for something, anything a victim or her abductor might have dropped. A gum wrapper, a cigarette butt, a stray hair. Nothing. The concrete floor had been stained over the years by oil and paint. A splatter here, a drip there. Did anything look like blood? No.

Industrial shelving lined two walls. Former tenants had left behind old paint cans, rags, assorted odd boxes of stuff. Nothing that looked useful to a killer.

He asked a couple of routine questions and listened to Janet Crane with one ear while he pictured what might have happened if Karly Vickers’s abductor had approached her in the alley.

She knows him. She feels safe, happy even. She’s had an exciting day. She has no idea she’s in danger until he puts a choke hold on her and pulls her into the vacant building.

It takes him a matter of a few seconds to accomplish the deed. He pulls her inside the building and ties her up. He glues her mouth shut to keep her from screaming. He leaves her until dark, when he comes back and takes her to the place where he will torture, rape, and eventually kill her.

It was a workable theory—provided Karly Vickers had exited out the back of the dental office. But Dr. Crane’s ever-efficient receptionist had stepped out of the office to take some bills to the corner mailbox that day, and hadn’t seen the young woman leave.