Alfred Hitchcock’s famous 1951 thriller, centered on a classic Catholic theme—that there is no difference between thinking a sin and committing it. When Guy (Farley Granger) daydreams the murder of his wife, black, neurotic Bruno (Robert Walker) materializes as if in answer to his prayers: Bruno will kill Guy’s wife if Guy, in turn, will kill Bruno’s father. Some critics (famously Robin Wood) have claimed that the film cops out by relieving Guy of his end of the deal, but something else is going on here, particularly when Bruno’s father—elevated, unseen, all-powerful—is clearly more than a father. Perhaps Strangers on a Train still hasn’t yielded all its secrets. With Ruth Roman and Leo G. Carroll; a disgruntled Raymond Chandler worked on the screenplay.