Seasons 1-4 star James Norton as Sidney Chambers, the charismatic, charming, crime-fighting clergyman, and Robson Green as his partner in crime, Detective Inspector Geordie Keating, solving crimes in a simpler 1950s England. In Season 4, vicar Will Davenport (Tom Brittney) comes to Grantchester after Sidney’s departure, and finds himself as drawn to mysteries as his predecessor.