 Haughty, acid-tongued symphony conductor Alfred De Carter is madly in love with his wife, Daphne, but is driven to a murderous fit of jealousy when he reads a private detective s report of her activities during his absence. Convinced she is having an affair with his handsome young secretary, Tony, De Carter contemplates doing them both in. His fantasies of revenge inflate with elaborate, grisly detail in his mind as he conducts, but attempts to carry out his plans degenerate into a slapstick fiasco.