Diana Rigg proves she's still got it in these wonderful and atmospheric mysteries. Her Adela Bradley is an eccentric woman of strength and character, an accomplished author and expert on psychoanalysis and criminology during a time when women of her class were content to sit around and look pretty. After divorcing her "boring" husband, she travels about with her trusty driver and indulges her interests and curiosities, prying into the darker side of human nature. Rigg is wonderful in the role; few women could pull off that severe bob and yet still look so inviting. It's hard to imagine a better actress for the part.
In this episode, she investigates a murder at the posh finishing school she herself attended decades before. Someone, it seems, has killed the art teacher during a performance of a Gilbert and Sullivan play. Adela sets out to solve the case, but more murders follow and there's a subplot involving jewel theft and illicit love. A cast of colourful characters (look for David Tennant) and absolutely beautiful 30's-era set design and automobiles makes this a treat on every level. It's too bad this series didn't last. It fits right in there with the much more successful Poirot and Miss Marple mysteries.