Mavis and her lover plan to kill her wealthy new husband, Edgar Hollister, and seem to have succeeded quite quickly and all too easily, but have they? The arrival of Edgar's dotty daughter Susan, with fiance in tow, complicates everything as they try to solve the mystery of Edgar's disappearance.

The interfering housekeeper fails to help, and neither do the two bumbling members of the Harrogate Constabulary.

"A good mixture of Agatha Christie, Abbot and Costello, and Monty Python."