Grantchester Season 10 cast and character guide: Who plays whom in the ITV detective drama?

Premiering in 2014, Grantchester is set in the 1950s in the Cambridgeshire village of Grantchester. Based on the collection of short stories titled The Grantchester Mysteries by James Runcie, the series initially featured the character of Anglican vicar Sidney Chambers, but eventually focused on vicars William Davenport and Alphy Kottaram.

With Grantchester returning for its 10th season, the storyline is filled with murder and mystery as usual, and the cast members also play a crucial role in keeping viewers engaged.

Let us now explore the cast of Grantchester Season 10, including both regular and recurring characters.

Grantchester Season 10 cast and characters

Robson Green as DI Geordie Keating

Robson Green has been part of the series since its very first season, playing DI Geordie Keating, a World War II veteran. He is one of the main characters, and as his title indicates, he is directly involved in solving the murders that happen throughout the episodes.

Robson Green’s other projects include A Night on the Tyne, Shield Stories, Soldier Soldier, Casualty, and more.

Rishi Nair as the Reverend Alphy Kotteram

Rishi Nair is a relatively new addition to the cast, having joined as a series regular in season 9. He plays Reverend Alphy Kotteram, one of the series' key characters. Season 10 specifically highlights his character arc, including his love life and personal growth.

Rishi Nair has previously appeared in projects such as I’m Still Here, Hollyoaks, Silent Witness, Treason, and others.

Melissa Johns as Jennifer Scott

Melissa Johns has been part of the show since Season 6, playing Jennifer Scott, a police secretary. Along with Keating and Kotteram, she is equally involved in solving the crimes that take place around the British town. Melissa Johns is a British actress, and her other projects include Coronation Street, Adolescence, and more.

Kacey Ainsworth as Catherine "Cathy" Keating

Kacey Ainsworth has been part of the series since its first season and plays the role of Geordie Keating’s wife. She is central character of the show and has significant importance because of her role as the wife of the DI, who is actively involved in solving crimes around the city.

Kacey Ainsworth’s other projects include Practice, The Bill, etc.