Mrs. Bradley attends a party to celebrate the engagement of her god-daughter, Eleanor Bing, to Everard Mountjoy. When Everard meets with an untimely death, the police conclude that it was a tragic accident. Mrs. Bradley is unconvinced and, aided by her trusted chauffeur, George, sets out to discover the truth. (Pilot)

Mrs. Bradley returns to her old school to give the prestigious Evadne Flint Lecture, but the school music teacher is found dead during a performance of The Mikado. Mrs. Bradley investigates, and uncover bitter rivalries, a series of thefts, an illegitimate child, and a number of illicit affairs.

The body of a domestic cook is found floating in the river. Her employer calls on the assistance of her old friend, Mrs. Bradley.

Mrs. Bradley accompanies her chauffeur, George, to his daughter's wedding. Local fishermen discover the body of the vicar's daughter on the beach, with her hair shaved off and a worsted viper around her neck.