This story was also the basis of a 2003 miniseries. As we mentioned for Season 1, Dalgliesh himself is basically Benedict Cumberbatch’s version of Sherlock Holmes, but with more empathy.

Screenwriter Helen Edmundson also returns as lead writer and executive producer for the third series set in the late 1970s. Dalgliesh is now head of a unit dealing with high-profile crimes and ...