Grantchester Season 10: Start Time, Cast, Episode Count & Finale Details
Grantchester Season 10: Start Time, Cast & Episode Guide

The beloved British crime drama Grantchester makes its long-awaited return to television screens this week, embarking on its landmark tenth series. Fans can tune in to ITV1 and STV at 9pm on Wednesday, January 7, for the first of eight brand-new, hour-long episodes.

What to Expect in Grantchester Series 10

This new season will delve deeply into the powerful theme of family, exploring its meaning and construction. Series star Robson Green, who reprises his role as Detective Inspector Geordie Keating, provided insight into the narrative focus. "It's all about the notion of family and what it means to us, and how you construct one when you've never had one," he explained.

The central storyline will follow Reverend Alphy Kottaram, played by Rishi Nair, as he is forced to confront long-buried secrets about his identity. This plot thread was seeded in the previous series when Geordie questioned Alphy about having a secret. Robson Green teased, "Alphy goes in search of his identity... it's a big development for Alphy that opens up a Pandora's Box." This personal journey will strain the duo's partnership, as Geordie's meddling in Alphy's affairs leads to a significant rift between them.

The official synopsis confirms the pair must "support each other through changing times, family struggles and personal secrets" while continuing their crime-solving partnership in the picturesque village.

Full Cast List and Returning Faces

The core cast sees the return of Robson Green as DI Geordie Keating and Rishi Nair as Reverend Alphy Kottaram. Nair, who took over the clerical role from Tom Brittney, spoke about returning for the tenth series, expressing relief and excitement. "I was just relieved that I didn't get the show cancelled single-handedly!" he joked, acknowledging the challenge of following popular predecessors James Norton and Tom Brittney.

He added, "Being called back felt a bit like going back home again," highlighting the warm welcome he received from the cast and crew.

They will be joined by a host of familiar supporting characters, ensuring continuity for long-time viewers. The returning ensemble includes:

  • Al Weaver as Leonard Finch
  • Tessa Peake-Jones as Mrs. C
  • Kacey Ainsworth as Cathy Keating
  • Oliver Dimsdale as Daniel Marlowe
  • Nick Brimble as Jack Chapman
  • Bradley Hall as DC Larry Peters
  • Melissa Johns as Miss Scott

Episode Count and the Beginning of the End

Series 10 will consist of eight episodes, airing weekly on Wednesday nights. This season is notably the penultimate chapter for the show. ITV confirmed last year that the eleventh series, which filmed in the summer of 2025, will be the final season of Grantchester. This means audiences have two full seasons left to enjoy before bidding a final farewell to the characters of Grantchester.

For those wishing to catch up or revisit past mysteries, the first nine series of Grantchester are available to stream now on ITVX across the UK. The new tenth series will also be available on the ITVX and STV Player platforms following its linear broadcast.

The return of Grantchester promises another compelling mix of period crime investigation and profound personal drama, setting the stage for the show's eventual conclusion.