Van der Valk is a British television series that was produced by Thames Television for the ITV network. It starred Barry Foster in the title role as Dutch detective Commissaris "Piet" van der Valk. Based on the characters and atmosphere of the novels of Nicolas Freeling, the first series was shown in 1972.

Adaptations of mystery stories written by Sir Arthur Conan Doyle's contemporary rivals in the genre.

England, 1645. The cruel civil war between Royalists and Parliamentarians that is ravaging the country causes an era of chaos and legal arbitrariness that allows unscrupulous men to profit by exploiting the absurd superstitions of the peasants; like Matthew Hopkins, a monster disguised as a man who wanders from town to town offering his services as a witch hunter.