Preview: Season 3 Episode 4 | 27s
Sidney and Geordie struggle to determine the connection between a murder and a number of post office robberies. See the mystery unfold in Grantchester, Season 3, Episode 4, airing Sunday, July 9th, 2017 at 9/8c on MASTERPIECE on PBS. #GrantchesterPBS
Aired: 07/09/17Video has closed captioning.