Armchair Thriller was a British television program on ITV first broadcast in two series in 1978 and 1980. The series was based on the Armchair Theatre format with scripts based on published novels and stories. Though not properly a horror series it included several supernatural elements. Armchair Thriller was produced by Thames Television though included serials made by other ITV companies. The format was of a twice weekly 30 minute episode usually screened on a Tuesday or Thursday at 8.30 - 9pm.