In season 10, as DI Geordie Keating and Reverend Alphy Kottaram continue to work together as a crime-solving duo in scenic Grantchester, they must also support each other through changing times, family struggles, and personal secrets. This season, Alphy feels like he's found a home, but he's forced to confront secrets he's kept close to his chest. Will he be able to let anyone fully in, or must he confront truths about himself first?

A suspicious death interrupts the Grantchester Easter celebrations. Alphy attempts to use the case as a distraction from his personal life.

A death at the university plunges Geordie and Alphy into a world of academic adversaries. Alphy encounters a complication in his romantic life.

Alphy's attempts to cook a romantic dinner are interrupted when a familiar face arrives unannounced at the vicarage.

Alphy and Geordie investigate witchcraft at a home for orphaned and disadvantaged children run by an old friend of Alphy's. When a body is found, Alphy struggles to consider his friend as a suspect.

Leonard's drinking lands him in a prison cell overnight. When he wakes up, the consequences only escalate from there.

Alphy and Geordie investigate when a member of a rock band is murdered. Alphy struggles with some family history.

Cathy and Mrs. Chapman's new business venture hits a serious obstacle. Geordie tries to intervene in Alphy's personal life, unbeknownst to Alphy.

Alphy and Geordie keep an eye on rising tensions as a controversial figure is invited to speak at the university. When a murder is committed, however, they disagree on how to approach the case.