After spending decades living in the shadow of his more famous and successful sibling, Consulting Detective Sigerson Holmes is called upon to help solve a crucial case that leads him on a hilarious trail of false identities, stolen documents, secret codes... and exposed backsides.

Larry Abbot, speaker in the radio horror shows of Manhattan Mystery Theater wants to marry. For the marriage he takes his fiancée home to the castle where he grew up among his eccentric relatives. His uncle decides that he needs to be cured from a neurotic speech defect and exaggerated bursts of fear: he gives him a shock therapy with palace ghosts.

When a happily married family man, who would never consider an affair, meets a beautiful woman in red, he is totally infatuated and desperate to make her acquaintance. However, as he tries out various schemes to sneak out to meet her, he realizes that adultery is not quite as easy as it looks.