Zero and Arlo are hired by Portland area millionaire Gregory Stark. Stark has lost the key to a safe deposit box and is being blackmailed by an unknown person who forces him to follow elaborate instructions to deliver the cash payments. Zero quickly discovers that the blackmailer is Gloria Sullivan, an EMT with a mysterious past. Zero becomes attracted to Gloria and they sleep together, compromising his trademark objectivity. He lets his guard down and tells her that his abusive father killed his mother and himself.