He Knew He Was Right is a 2004 BBC TV adaptation of the Anthony Trollope novel He Knew He Was Right. It was directed by Tom Vaughan from a screenplay by Andrew Davies, produced by Nigel Stafford-Clark and starred Oliver Dimsdale, Laura Fraser, David Tennant, and Bill Nighy. It was originally broadcast on the BBC in four hourly episodes.
The series portrays the failure of a marriage caused by the unreasonable jealousy of a husband exacerbated by the stubbornness of a wilful wife.