Despite Jane Wyatt, who offers possibly the worst performance of a femme fatale in the whole noir cycle, The Man Who Cheated Himself is a more-than-passable, gritty little thriller. Veteran cop Lee J. Cobb is showing the ropes to little brother John Dall ("Gun Crazy," "Rope"). Dall is on the verge of blissful matrimony but Cobb still likes to play the field, the field being filthy-rich society matron Wyatt. When she kills her ne'er-do-well hubby (by accident? It's never clear), Cobb helps her cover up the crime. Trouble is, he taught his brother the tricks of the trade rather too well... This movie is rather better than you might expect it to be, thanks to Cobb's moaning, double-bass voice and some not-terribly-stale plot developments.