Based on the British miniseries The Bletchley Circle, the new series will follow Millie and Jean as they travel to San Francisco and continue to use their code-breaking skills to solve murders with the help of a group of American cryptographers.
The Bletchley Circle: San Francisco isn't as rich and meaningful as its predecessor, but it's evocative and entertaining, with a little murder thrown in for good measure.
The real question is why they bothered... The dialogue verges on the clumsy, the historical references seem shoe-horned and the departed actors who made up the original cast are very much missed.
This couldn't be further from the bleak, Scandi-style murder mystery. One more reason why it feels old-fashioned, of course, but none the worse for it.