"Grantchester Mysteries" is a British television series based on the Grantchester novels by James Runcie. Set in the 1950s, it follows the story of a vicar, Sidney Chambers, who becomes an amateur detective in the small village of Grantchester. He teams up with a local police constable, Geordie Keating, to solve various crimes while navigating the complexities of faith and morality. The show combines elements of mystery and drama, showcasing the social issues of the time. Each episode features a new case, often involving murder, and explores the relationships between the characters, including Sidney's struggles with his vocation and personal life.