Fair rating?Grantchester· Season 4 · Episode 3
Episode 3
Geordie suspects foul play when computer laboratory head Professor Simms keels over and dies from mercury poisoning. It seems the deceased recently spent the night in the lab with someone other than his wife, possibly a fellow educated man. Geordie seeks advice from Leonard, and the pair start to uncover the surprisingly messy love lives of Simms' colleagues. Elsewhere, Cathy is brutally tricked, Will returns to Grantchester and Mrs C makes a shocking discovery.
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#5In Season 4of 6 rated episodes
#30All-timeof 72 rated episodes
−0.2vs season avgSeason 4 averages 8.4
2019First airedJanuary 25, 2019
Guest stars
Bradley Hallas Larry Peters
Nick Brimbleas Jack Chapman
Oliver Dimsdaleas Daniel Marlowe
Gary Beadleas Archdeacon Gabriel Atubo
Felix Scottas Sean Donovan
Christian McKayas Anthony Hobbs
Zoe Telfordas Jean Simms
Marli Siuas Karla Reed
Charlie Hamblettas Tim Avery
Simon Bubbas Bobby Guthrie
Tom Turneras Alex Simms
Catherine Hamiltonas Theresa Guthrie
Rob Witcombas BernardCrew
Stewart SvaasandDirector
John JacksonWriter
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