Masterpiece’s new British mystery The Marlow Murder Club opens with retired archeologist Judith Potts leaving her inherited mansion by the River Thames in the sleepy village of Marlow and heading for her nightly au naturel evening swim. But when she hears a gunshot outside her neighbor’s house and calls the police to report a crime, she’s not taken seriously. And when that neighbor, an art gallery owner, appears to be missing, she has to do her own gumshoeing, including interrogating a shady antiques dealer she deems a suspect. Johan Persson More murders follow. Next: a kindly widower is shot dead in his home. Seeking a connection between the two crimes, Judith decides to work with the deceased’s dear friend, dog walker Suzie Harris, and the vicar’s overlooked wife, Becks Starling. “The three of them become a very unlikely collections of sleuths,” says Bond. “...