Passport Season 4 Episode 1 | 1h 23m 2s

Endeavour finds himself consumed by a nightmarish case hunting a serial killer; he must race against time to find the connection between a chess-playing “thinking” machine and a baffling drowning.

Aired: 08/20/17

Expires: 09/10/21

Rating: TV-14

Video has closed captioning.

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Funding for Endeavour, Season 4 provided by: Viking Cruises, Farmers Insurance, The Masterpiece Trust and PBS Stations.