All episodes of the PBS drama "The Bletchley Circle" are available for purchase online at Amazon.com Instant Video, as of 2015. Episode previews and program information is available at PBS.org.
Both seasons of "The Bletchley Circle" are available for DVD rental from Netflix.
"The Bletchley Circle" is a dramatic mini-series about four British women investigating a series of murders in the London area. Set in 1952, this team of four has a secret past working as code-breakers at Bletchley Park during World War II. Disillusioned by a now monotonous life as a homemaker, Susan recognizes a pattern connecting a string of local murders. She elicits the help of her former teammates to track down the killer.
The events of the series play out over a total of seven episodes in two seasons. The first season of three episodes debuted on PBS in April 2013. The second season of four episodes began in April 2014. The show stars two-time BAFTA award-winning actress Anna Maxwell-Martin as Susan.
The show's first season has a 4.6- out of five-star rating with Amazon.com customers, while season two has a 4.5-star rating. The first season also has a 100 percent Fresh rating at RottenTomatoes.com along with a 100 percent audience score. The entire show has an eight- out of 10-point rating among 4,186 users at IMDb.com. The Wall Street Journal applauds the show's complex atmosphere, compelling drama and perfect performances.