*Warning: This episode contains spoilers for Episodes One and Two of Season Four of *Grantchester.

After a two-year gap, the crime-solving Rev. Sidney Chambers of *Grantchester *is back on the case — only to leave the village in pursuit of love and social justice abroad. We speak to series creator, head writer and executive producer Daisy Coulam about James Norton's final day on set, Robson Green's tearful goodbye to his on-screen partner and how it felt to write in Tom Brittney's new main character, the Rev. Will Davenport. Coulam also gives a preview of the mysteries still to come on this upcoming fourth season.