Will’s life has changed for the better. He is happily married to the brilliant, Bonnie and due to become a father but his world is about to be rocked by a terrible accident.
　　He’s always preached the word of a compassionate God – but how can he now, when his despair leads him on a dangerous downward spiral. Geordie has found a new contentment in his relationship with Cathy but when they are both confronted with shock announcements at work their new-found happiness is threatened. As Mrs C, Leonard, Jack and Daniel rally around, both Will and Geordie find themselves in unfamiliar, emotional waters and murder is always around the corner.
　　Series eight of Grantchester will range from speedway to spies, exploring the lives of invisible women and the very visible problems caused by Leonard’s new vocation which may, once again, find him battling the law. Exploring faith, forgiveness, and redemption – this explosive series of Grantchester tests Will and Geordie to the limit.