The Silver King is a 1929 British silent drama film directed by T. Hayes Hunter and starring Percy Marmont, Harold Huth and Chili Bouchier.
However the company's decision to shoot it and other films that year as silents led to large financial losses due to the emergence of sound.
Geoffrey sees an opportunity for revenge by giving his desperate former friend a surefire insiders' tip on a horse running at generous odds in that year's Epsom Derby.
Wilfred lays a large bet which he can ill afford, only to watch in dismay as the horse straggles home at the back of the field.
The police learn of the events of the day and interview Wilfred, who is unable to provide a satisfactory account of his movements that evening.