Hours later, Kate awakens and decides to discreetly leave while the man, Warren Lockman, is asleep. Kate sits at his desk to leave him a note and finds a document indicating that Warren has contracted a sexually transmitted disease. Shocked, she leaves the apartment. In her haste, she forgets her wedding ring on the nightstand, and she returns to retrieve it. The elevator doors open on the figure of a tall, blond woman in dark sunglasses wielding a straight razor. Kate is violently slashed to death in the elevator. A high-priced call girl, Liz Blake, happens upon the body. She catches a glimpse of the killer in the elevator's convex mirror, and subsequently becomes both the prime suspect and the killer's next target.