The Bletchley Circle returns to ITV on 6 January at 9pm with the first episode of four. The four episodes will be divided into two stories. The synopsis, from the ITV press release, for the first story is below:
Olivier award nominated actress Hattie Morahan joins Anna Maxwell Martin, Rachael Stirling, Sophie Rundle and Julie Graham for four new episodes of the code-breaking thriller The Bletchley Circle, which returns to ITV at the beginning of 2014.
The series, based on the lives of four extraordinary and brilliant women who worked at top-secret HQ Bletchley Park during World War II, features two self-contained stories each played out across 2 x 60 minute episodes written by series creator Guy Burt.
Set a year on from the first series in 1953, the ladies are reunited for their second case in the first two-part story when former Bletchley Park colleague, Alice Merren (Hattie Morahan) is accused of murder. Jean (Julie Graham) methodically sets to work examining the evidence and is intent on helping Alice after a distinguished scientist is discovered shot through the heart in the study of his home with Alice, gun in hand, standing over him.
The evidence is stacked against her, but Jean’s instincts tell her differently and she goes to visit Alice in Holloway Prison. Alice is quietly resigned to the fact she will hang. But why has she offered no defence and why does she refuse to talk?
Jean calls on the ladies to reunite, but will they share her faith in Alice’s innocence?