The Secret of Annexe 3 (1986)
Inspector Morse seldom allowed himself to be caught up in New Year celebrations. So the murder enquiry in the festive hotel had a certain appeal. The corpse was still in fancy dress and hardly a single guest had registered under their genuine name.

The Riddle of the Third Mile (1983)
Dr. Browne-Smith had passed through the porter's lodge at 8:15am and nobody had heard from him since. Plenty of time for him to disappear, thought Inspector Morse, and plenty of time for him to cover his trail.

Last Seen Wearing (1976)
After leaving home to return to school, teenager Valerie Taylor had vanished and the trail had gone cold. Two years after her disappearance somebody decides to supply new evidence for the case.