The Bletchley Circle

During World War II, men and women at Bletchley Park played a crucial role in breaking German military codes. Nine years later, former codebreaker Susan, now a housewife and mother, continues to recognize patterns in everyday life. When a series of brutal murders occurs in London, Susan detects a pattern, but her search for an overlooked victim yields nothing. Recognizing she can't solve the puzzle alone, Susan enlists the help of three former Bletchley Park colleagues, Millie, Lucy, and Jean, to break the code before the killer strikes again.