As the residents of Shipton Abbott gear up for Christmas, Humphrey and the team are baffled by a series of bizarre burglaries which aren’t quite what they seem. However, when the team make a breakthrough with an unexpected connection, it’s a bittersweet discovery that makes them reconsider the true meaning of Christmas. Back at the station, Kelby is forced to babysit a cheeky young shoplifter and Humphrey feels the pressure when CS Charlie Woods continues to question why their beloved local police station should remain open.

It's finally Humphrey and Martha's wedding day – what could possibly go wrong? Other than a museum heist, cyber crime and an unexpected arrival.