Episode 4 Preview
- Season 3 | Episode 4
- Aired Sunday, July 9, 2017
- Preview | 0:30
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
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