A mentally disturbed man is arrested after a vicious hammer attack at a train station leaves another man dead.

Kate has raised with Charlie the question of marriage. In spite of his feelings for Kate, Charlie is freaked out by this. His anxiety is heightened considerably by The Mask investigation — his personal involvement in the hunt for a sexual psychopath who preys on young men.

Kate is annoyed when Charlie releases her counterfeiting suspect, his friend and informant, prostitute Roxanne Tate, from custody without consulting her. On her way out of the station, Roxanne sees one of her main clients — a man she calls the Silver Medallist — better known to Charlie as Graham Holbeck, Kate's father.