Tom Brittney宣布这会是自己出演的最后一季，Rishi Nair加入饰演新牧师Alphy Kotteram，并将在潜在的后续新季中接替主角位置。

韦布五百年前在伯捷克城堡和一群徒赌玩扑克牌，因耍老千和这些人结下梁子，甚至遭雷劈死，而变成了城堡的幽魂，一直在那里徘徊不去。五百年后新的城堡继承人朱利安国王为了向琳欧娜女爵求婚，特地到这个城堡来，打算在此举行婚礼。没想到一连串的闹鬼事件，竟然扯出了一段长达五百多年的仇恨…

As DI Geordie Keatingand 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