Season 2 Premiere \ Monday 10PM ET
Season 2 Premiere \ Monday 10PM ET

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About the show

In The Bletchley Circle, four women with an extraordinary flair for code breaking and razor-sharp intelligence skills become the unlikely investigators of a string of grisly murders. Susan, Millie, Lucy, and Jean have returned to post-war London, modestly setting aside the part they played in the Allied victory. Their brilliant work at top security HQ Bletchley Park helped crack the codes used by the German military, producing crucial intelligence that shortened the war. Back at home, a race against the clock ensues as the women work to outwit the culprit of a series of murders.
In Season 2 of The Bletchley Circle, the four code-breaking protagonists return to solve darker and more dangerous cases. Susan, Millie, Lucy, and Jean are joined by their former Bletchley Park colleague Alice, who could face the death penalty for murder. Meanwhile, Millie becomes entrenched in the murky world of human trafficking when she deals with the charming and rogue Jasper.

SEASON

Meet the Cast

Susan

Anna Maxwell Martin

Susan, played by two-time BAFTA award–winner Anna Maxwell Martin, is the driving force behind getting the group of women from Bletchley Park back together in an attempt to solve a run of murders. Strong and intelligent, Susan is conflicted between following her instincts and helping solve the crimes and being a good wife and mother. Susan carried out crucial code-breaking work at Bletchley during the Second World War, but has to keep her role secret from others, including her civil servant husband Timothy.

Millie

Rachael Stirling

Millie is a brilliant linguist and cartographer. She comes from an aristocratic background, but chose to travel the world after her war service at Bletchley Park. Her street smarts and adventurous side complements Susan’s more serious nature. ballsy, feisty character with an aristocratic background.

Jean

Julie Graham

Jean now works as a librarian and brings her expertise in digging into records to track down murderers. She was in charge of the women at Bletchley Park and maintains being the stern and dedicated voice of the group.

Lucy

Sophie Rundle

With an extraordinary photographic memory, Lucy plays a vital role in The Bletchley Circle. Lucy is its youngest member, but is determined to help solve crimes and even puts herself in danger to do so.

Meet the Cast

Susan

Anna Maxwell Martin

Susan was the driving force behind reuniting the group of women from Bletchley Park. Now she is reluctant to be involved in strings of crime because of the potential danger they could bring to her family.

Millie

Rachael Stirling

Millie’s code-breaking skills are in language and maps. She is bold and independent. In her day-to-day she translates for the government and balances side jobs to pay the bills.

Jean

Julie Graham

Jean was in charge of the women at Bletchley Park and continues to be the stern voice and dedicated soul of the group. In this season she is driven to prove the innocence of one of their own.

Lucy

Sophie Rundle

Lucy may be the youngest member of the group, but a major life change forces her to mature. She becomes even more dedicated to her work, and helps solve crimes with her extraordinary photographic memory.

Alice

Hattie Morahan

Alice also worked at top-security HQ Bletchley Park and her expertise is in machines. She awaits trial for the murder of a prominent scientist. Jean believes Alice is innocent, but why is Alice offering no defense when she is facing the death penalty?

Photos

Photos