Bletchley Circle Watch Order poster
Series Completed 2012-2018

Bletchley Circle Watch Order

Bletchley Circle in order, from Cracking a Killers Code in 2012 through Blood on Their Hands and Uncustomed Goods in 2014, then the San Francisco spinoff with eight episodes in 2018. Former codebreakers solve murders in London then San Francisco.

Last updated October 3, 2026

Watch Order

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London then San Francisco.

About Bletchley Circle

The Bletchley Circle follows Susan, Millie, Jean, and Lucy, wartime Bletchley Park women reuniting in 1952 London when Susan spots a murder pattern police dismiss. Series one aired three episodes in September 2012 as Cracking a Killers Code, series two aired four in January 2014 as Blood on Their Hands and Uncustomed Goods.

The spinoff San Francisco followed Millie and Jean to 1950s California for eight episodes from July to September 2018 with US codebreakers Iris and Hailey. Watch London 2012 to 2014 first, then San Francisco 2018, since the spinoff assumes the circle bond.

Good to know

There is no separate chronological order worth listing. London runs in 1952 to 1953 and San Francisco follows later in the 1950s with Millie and Jean continuing, so release order from 2012 to 2018 is also story order. The spinoff is tonally different with new American leads, but it still continues the circle bond forward.