Lionel Twain invites the world's five greatest detectives to a 'dinner and murder'. Included are a blind butler, a deaf-mute maid, screams, spinning rooms, secret passages, false identities and more plot turns and twists than are decently allowed.

A man who accused a catholic bishop of abusing him when he was a child dies in the Austrian city Salzburg. Everyone except his widow and the eccentrical detective Simon Brenner keeps silent and believes that the man killed himself.

A young opera singer is stalked by a deranged fan bent on killing the people associated with her to claim her for himself.

While visiting the circus with his family, Charlie is recruited by the big top's co-owner to investigate threatening letters that he's received.

When a friend of Charlie's is found kicked to death by his own race horse on board a Honolulu-bound liner, the detective discovers foul play and uncovers an international gambling ring.