The Bletchley Circle

From PBS - Since Alice refuses to participate in her own defense, the women begin to investigate the murder. Clues found in the murdered man's house lead to Lizzie, a woman with whom he had a relationship. In Lizzie's apartment, the women find a classified military file and press clippings relating to a chemical spill. Eventually they track down Lizzie, who fears her life is in danger. Susan deduces why Alice is willing to face the death penalty.

From PBS - Alice is facing the gallows — it's a race against time to prove her innocence and save her life. Through a search of documents and confidential police information, the women believe the murder was part of a wider military cover-up. When Susan gains entry to a military hospital, she learns the truth. Meanwhile, the other women's lives are in danger.

From PBS - Millie is abducted and taken to a seedy hotel, where she meets a young Eastern European girl who indicates that the crime ring is involved in sex trafficking. Jasper, Millie's black market partner who was caught skimming money, has also been kidnapped and badly beaten. Millie persuades Marta, the crime family matriarch, to let her take over Jasper's operation. After her release, Millie convinces Alice, Jean and Lucy that they should help the trafficked girls. The four women make a horrifying discovery.

From PBS - The women realize there's corruption in the vice squad and decide to intercept the crime ring themselves, with Jean posing as a potential client. Lucy manages to memorize Marta's ledger, but it's written in machine code. Returning to Bletchley Park, they locate an old Enigma machine, break the code and tip off Customs and Excise. But Marta is on to them.

From PBS - The cast and crew of "The Bletchley Circle" discuss the inspiration behind the dynamic characters of the series.