Multi-award winner Diana Rigg (Rebecca, The Avengers) stars as stylish sleuth Mrs. Adela Bradley in this sophisticated 1920s whodunit filled with blackmail, a shooting, and plenty of devious twists and turns.

Mrs. Bradley, with her trusty chauffeur George (Neil Dudgeon), arrives at Chayning Court for the engagement party of her god-daughter, Eleanor Bing. Later that evening, Eleanor’s fiancé is found dead in the bath. The police are called in and conclude that his death was nothing more than a tragic accident.

Mrs. Bradley is not so easily satisfied–why was there water on both sides of the bath, why was the window open, and why was the door unlocked? While the rest of the household attends the funeral, Mrs. Bradley launches her own investigation, using her prodigious charm and wit to help the local police catch a killer.