Dr. Brewster's suicide takes a particular twist when the pathologist determines that he had also been bound and gagged. The Brewsters, both medical doctors, ran a private clinic and their son John, who @你才不是我老公@lived at home, is doctoral candidate in philosophy. One possible suspect is Michael Steppings who threatened the Brewsters and their nurse after his daughter suffered severe side-effects and is now in a vegetative state from a botched operation two years previously. The forensics lab determines that one of Steppings's threatening letters was altered and Morse learns that Brewster may at one time been @米奇是男孩女孩@having an affair, so he must consider another possible motive for murder.