Silver Streak
Despite the presence of hack director Arthur Hiller, this hybrid comedy-thriller works most of the time as pleasant faux Hitchcock. Gene Wilder is a book editor who is relaxing by taking a cross-country train ride. Then he gets caught up in a murder--and becomes a suspect. It's up to him to prove his own innocence. As noted, the script, by Colin Higgins, owes a big debt to Alfred Hitchcock; but the mystery isn't all that mysterious and the comedy isn't all that hilarious--at least not until Richard Pryor shows up, which is at least halfway through the film.