As WW2 rages around the world, DCS Foyle fights his own war on the home-front as he investigates crimes on the south coast of England. Later series sees the retired detective working as an MI5 agent operating in the aftermath of the war.
In 1790 Johan Gustav Dåådh joins the Stockholm police, in an attempt to change, or at least improve, the system from within. He is a modern thinker in an old hierarchy. Torn between alliances, he solves crimes among rich and poor.
At the turn of the 20th century the Metropolitan Police were overwhelmed with bizarre cases so they turned to outsiders including Houdini and Doyle, who collaborated with New Scotland Yard on some unsolved and inexplicable crimes.