When a professor dies at a cutting-edge computer laboratory, Geordie turns to Leonard for assistance. As they discover the messy love lives of the computer laboratory team, Cathy is tricked, Will returns and Mrs. C makes a shocking discovery.
[Grantchester](https://www.pbs.org/wgbh/masterpiece/shows/grantchester/):
Season 4 Episode 2, Sunday at 9 p.m. on PBS 6.
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