The Bletchley Circle (2012–2014)
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Blood on Their Hands: Part 1 

During the war Alice Merren was one of Bletchley's brightest code-breakers. Now it is 1953. Lucy has a clerical job for Scotland Yard, Millie works as a German translator and Susan a ... See full summary »


Jamie Payne


Guy Burt

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Episode cast overview, first billed only:
Paul McGann ... John Richards
Jonathan McGuinness Jonathan McGuinness ... Technician
Hattie Morahan ... Alice
Julie Graham ... Jean
Joanne Adams Joanne Adams ... Guard
Simon Chandler ... Solicitor
Sophie Rundle ... Lucy
Nick Blood ... Ben Gladstone
Rachael Stirling ... Millie
Anna Maxwell Martin ... Susan
Victoria Carling Victoria Carling ... Headmistress
Mabel Watson Mabel Watson ... Claire
Freddie Anness-Lorenz Freddie Anness-Lorenz ... Sam
Mark Dexter ... Timothy
Jane Guernier Jane Guernier ... Florist


During the war Alice Merren was one of Bletchley's brightest code-breakers. Now it is 1953. Lucy has a clerical job for Scotland Yard, Millie works as a German translator and Susan a housewife perturbed that her husband's promotion may take them overseas. Jean visits Alice in prison, awaiting trial for killing her old flame and Bletchley colleague John Richards. Jean is convinced of Alice's innocence and persuades her friends to investigate. They discover that John sent flowers to a young girl, Lizzie Lancaster and a search of her flat reveals she is in possession of a classified military file and a press cutting of an incident where military personnel were injured by a chemical experiment on Salisbury Plain. The women save Lizzie from a hit and run and Jean correctly assumes that she is Alice's daughter. The Bletchley circle believe both mother and daughter have been set up by John's killer who was also responsible for the Salisbury Plain incident. Written by don @ minifie-1

Plot Summary | Add Synopsis


TV-PG | See all certifications »






Release Date:

13 April 2014 (USA) See more »

Company Credits

Production Co:

World Productions See more »
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Technical Specs




Aspect Ratio:

1.78 : 1
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Did You Know?


A book of second class stamps was found in a victim's pocket. Two-tier postal rates (first and second class stamps) weren't introduced until September 1968. See more »


[Millie is now working as a freelance German translator]
Millie: I get a lot of compliments.
Millie: [German accent] Your translation is excellent, Fräulein. It will really help us secure this contract.
Millie: I want to say "It also helped us beat you, pal." I'm sure half of them were Nazis. But the pay is good and needs must.
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User Reviews

Another case for the fab four.
21 October 2018 | by Sleepin_DragonSee all my reviews

Another quality case for the fab four, I think it's fair to say they're acting more like amateur detectives in this one, unlike previously where they used logic to crack the code. Anna Maxwell Martin's character had previously grabbed most or the limelight, here that focus seems a bit more spread out, with Jean getting more screen time. The story is very, very clever, with some surprising elements. The attempted running over was well staged. It's smart, well made, cleverly crafted, plus it has a sense of urgency. 8/10

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