Series 2 is the first to have a series-long "B-story" beginning with the first episode and ending with the series finale.
Sidney's typewriter is a 1951-9 Remington Quiet-Riter.
Grantchester itself is used for extensive filming, with the Church of St Andrew and St Mary used for the church interior and churchyard scenes. A private home in Lemsford, Hertfordshire doubles as the vicarage, while the Windmill pub in Chipperfield is used for The Red Lion.
Based on The Grantchester Mysteries, a collection of short stories written by James Runcie.