A short-lived anthology television series from Hammer Studios. Though similar in format to the 1980 series Hammer House of Horror, the Mystery and Suspense series had feature-length episodes, usually running around 70 minutes without commercials. Co-produced by Hammer Studios with 20th Century Fox Television, it is known in the United States as Fox Mystery Theater. Unlike 1980's Hammer House of Horror, all episodes feature American actors as either the leads or in key roles. It first broadcast in the UK on ITV in 1984, though was not simulcast and was shown in different timeslots throughout the various regions.

First in a trilogy of plays. An assassin is out to kill Major Hastings in his isolated country home.