Episode 3

S6 E3: Will and Geordie are drawn into the cut-and-thrust world of local politics when the death of Councillor Derek McArthur prompts an election in Grantchester - following her husband Derek's tragic suicide, liberal reformist Reeny McArthur is running for her late husband's seat with a little help from her old friend and local author Robert Waterhouse. They are pitted against the entrepreneurial and ambitious Maurice St Martin, who has the backing of his cousin and local businessman Phillip St Martin. When Reeny receives evidence that her husband's death wasn't suicide, she confides in Will - Reeny is convinced that Derek was murdered, but can Will prove it and convince Geordie to take the case?