Cracking a Killer's Code (1)
Episode 1
When Susan Gray spots a hidden pattern in a series of murders, she tries to inform the police. But when they and her hus
The Bletchley Circle (Season 1)
Episodes: 3
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Cracking a Killer's Code (2)
Episode 2
As Susan and the other Bletchley women close in on the murderer of the five girls, a shocking discovery calls their theo
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Cracking a Killer's Code (3)
Episode 3
Thrown into a chilling confrontation with the murderer they have so brilliantly tracked down, Susan and the other Bletch