Morse is passed over for promotion and gets a new working partner in the shape of Lewis, who is not sure what to make of his new boss. Their first case together is a murder, when Anne Staveley, who was Morse's friend in a choral society, is found hanged in her house in the Jericho area of Oxford. The death looks like suicide, but Morse has his own reasons for treating the case as a murder investigation. A parking ticket and Oedipus the King, by Sophocles, come to his assistance.