Nick and Nora Charles investigate when Nora's cousin reports her disreputable husband is missing, and find themselves in a mystery involving the shady owners of a popular nightclub, a singer and her dark brother, the cousin's forsaken true love, and Nora's bombastic and controlling aunt. Private detective Nick Charles and his wealthy wife Nora are back home at last and hoping for a quiet New Year when there is a murder. The obvious suspect is his wife, Nora's cousin, Selma.