Starring Anna Maxwell Martin, Rachael Stirling, Hattie Morahan, Sophie Rundle and Julie Graham.
In World War II they were code-breakers at Bletchley Park; brilliant, invaluable members of an elite team whose task was to crack German intelligence.
Seven years after helping to win the war they are housewives, mothers, girlfriends, shadows. Bound to the Official Secrets Act, their part in the Allied victory cannot be told. Now, suddenly, a chance to exercise their brilliant minds again by turning their abilities to tracking down a serial killer terrorising women. It’s a hard and dangerous world - they have the heart, but do they have the strength to survive?
Series One: 4 x 1 hour | Series Two: 4 x 1 hour