Former Bletchley Park worker Alice Merren is in prison awaiting trial for the cuddle of the eminent scientist John Richards. Driven by her belief in Alice's innocence and that she is hiding the truth about John's passing, Jean attempts to regroup the circle in order to help establish the innocence of one of their own.

The Bletchley Circle Season 2 Episodes...

• s02e01 - Blood on Their Hands: Part 1
• s02e02 - Blood on Their Hands: Part 2
• s02e03 - Uncustomed Goods: Part 1
• s02e04 - Uncustomed Goods: Part 2

The Bletchley Circle Show Summary

The Bletchley Circle follows the journey of four ordinary women with extraordinary skills that helped to end World War II.

Set in 1952, Susan, Millie, Lucy and Jean have returned to their normal lives, modestly setting aside the part they played in producing crucial intelligence, which helped the Allies to victory and shortened the war.

When Susan discovers a hidden code behind an unsolved cuddle she is met by skepticism from the police. She quickly realises she can only begin to crack the cuddles and bring the culprit to justice with her former friends.

The Bletchley Circle paints a vivid portrait of post-war Britain in this fictional tale of unsung heroes.