It was directed by Paul Krasny and is most noted for the appearance of Monty Python's Graham Chapman in a rare straight role as a Detective Inspector.
[1] After the cancellation of the original series, it enjoyed a second life in syndicated reruns and the film was greenlit by CBS in an attempt to gauge potential audience interest in reviving the series.
While the film pulled fairly solid numbers, it was ultimately decided that the ratings were not high enough to move forward with a new series, and plans to do so were scrapped.
However, the film was later split into two parts and added to the Crazy Like a Fox syndication package.
During a vacation in the United Kingdom, Harrison "Harry" Fox, Sr. (Jack Warden) and Harrison Fox, Jr. (John Rubinstein) inadvertently become the prime suspects in a murder case, and must go on the run in the British countryside with the whole of the police force on their trail.