0 1 min 12 yrs

Watch the trailer for the ITV1 three-part thriller The Bletchley Circle’ starring BAFTA award winner Anna Maxwell Martin alongside Rachael Stirling, Sophie Rundle and Julie Graham

After producing crucial intelligence which helped the Allies to victory during World War Two, Susan, Millie, Lucy and Jean have returned to their normal lives.

Until now that is… When a string of unresolved murders take place, Susan and her friends spot a pattern of behaviour no-one else has, but can they begin to crack the case and bring the culprit to justice?

‘The Bletchley Circle’ will air on ITV1 in the Autumn.