Lee J. Cobb stars as Ed Cullen, a San Francisco police lieutenant, embroiled in a clandestine romance with married socialite Lois Frazer (Jane Wyatt). When Lois kills her husband Howard (Harlan Warde), the flustered Cullen vows to cover for her. He arranges the evidence to suggest that Howard was shot during a robbery. Things get sticky when Cullen is assigned to investigate the case, together with his more honest younger brother Andy (John Dall). How can Cullen escape detection without destroying his brother's standing with the force? Man Who Cheated Himself is worth seeing if only to watch Jane Wyatt play against her established screen image.