Two young men strangle their "inferior" classmate, hide his body in their apartment, and invite his friends and family to a dinner party as a means to challenge the "perfection" of their crime.
The millionairess aunt of Errol's previously married wife is coming to visit, and since the aunt is dead set against divorce, the wife prevails upon Errol to pose as the butler, and brings back her inebriated first husband to pose as her current mate.
Stevie Carson, a newspaper reporter, and Danny Butler, the "morgue" manager on the same newspaper, set out to track down the killer of a colleague, a book-reviewer who was involved with a group of rare book forgers and whose sister has been convinced her editor-fiance, Bill Monroe, killed him.
After the discovery of two murders, Commissioner Chabrier, of the French secret services, is investigating the disappearance of plans affecting the national defense of the country robbed by a gang of international spies.