The plot of his illegitimate son Mordred to gain the throne, and Guinevere's growing attachment to Sir Lancelot, threatens to topple King Arthur and destroy his "round table" of knights.

A wily old codger matches wits with the King of the Leprechauns and helps play matchmaker for his daughter and the strapping lad who has replaced him as caretaker.

An American junior diplomat in London rents a house from, and falls in love with, a woman suspected of murder.

A delirious young woman feels trapped in a remote mansion at the mercy of a madman.

Philip Hannon, a blind playwright living in London, overhears part of a conversation , that leads him into a desperate race, to find a kidnapped child. When he gets no help from the police, he along with his butler, and his ex fiancée, attempt to track down the crooks.

In the 1810s, an old maid poses as her own niece in order to teach her onetime beau a lesson.

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.