The Bletchley Circle: San Francisco

As Iris struggles with husband Marcus’ imminent deployment overseas, she and the other women delve into the mysterious death of a friend - and uncover a marriage built on lies and deception.

After a seemingly innocent man is charged with murder, the women become involved in a tangled suburban tragedy, racing to find both the true killer and the methods before the scent goes cold. Meanwhile, Jean grapples with how to build a new life for herself.

A bloodied and battered stranger collapses on Millie and Jean's doorstep, dragging them into a mysterious criminal underworld.

Having uncovered a covert system of police corruption, the women must go it alone, crafting a complex sting operation in order to draw out two warring factions and see justice done.

When a Russian diplomat dies in Iris's arms, the FBI sweep in to control the story and rule the death accidental and Iris is forced to get involved to protect her family.

A death in the Big Bop Club brings an international incident right to their doorstep, while the women grapple with Jean's sudden disappearance.