Alphy's trip to reconcile with his mother takes a shocking turn when he is introduced to someone and uncovers painful truths about family and faith. On the train home, a fellow passenger is murdered, and Alphy becomes the prime suspect amid prejudice and fear. Back in Grantchester, Leonard defends troubled Raymond from Geordie, and Miss Scott hides a big secret.

Starring:

Robson Green, Tessa Peake-Jones

Genre:

Drama