Blood relatives An 87th precinct mystery

"Bloody palmprints. He would always remember seeing first the bloody prints, one on each side of the glass-paneled doors. And then the doors swinging open and the girl spilling into the room. Arms wide, hands imploring . . . blue dress torn open over white blood-smeared bra, she lurched toward the muster desk, beseeching Kling to help, for God's sake, help."

The girl was Patricia Lowery, fifteen years old. She was the lucky one. Soon after, they found her cousin, Muriel Stark, seventeen, lying in a doorway, her body ripped with knife wounds. Hysterically, Patricia talked to Detectives Steve Carella and Bert Kling of the 87th Precinct, telling her brutal story of molestation and murder. The man was tall, dark-haired, blue-eyed, she said; he had a knife blade four inches long, she would never forget what he looked like, what he made them do.

Immediately, Kling and Carella set out to find the killer, launching interrogations, file searches, laboratory analyses -- all the weapons of investigation at their command. The twisting, blood-spotted trail leads them deep into the warped world of the sex offender. Then, click. Tall, dark hair, blue eyes, phony alibi. And a positive identification from Patricia: "I said I'd never forget."

There's only one problem. He's the wrong man.