Frederic Dannay

Charles Van Horn, son of rich and powerful Théo Van Horn, calls upon his former teacher Paul Régis to help him solve the mystery of his recurring bouts of amnesia.

Several days after one of his company's dams burst, ruining the life savings of several investors, a shady power company president is found stabbed to death. Ellery Queen gets to the bottom of the mystery.

Ventriloquist and world traveler Gordon Cobb is murdered by a gang of jewel thieves. Baffled by the contradictory clues, Inspector Queen asks his son, Ellery, to help out.

A man is framed for embezzlement and runs off to San Francisco. His wife hires Ellery Queen to try and track him down before the police get to him.

Charles Van Horn, son of rich and powerful Théo Van Horn, calls upon his former teacher Paul Régis to help him solve the mystery of his recurring bouts of amnesia.

Several days after one of his company's dams burst, ruining the life savings of several investors, a shady power company president is found stabbed to death. Ellery Queen gets to the bottom of the mystery.

Ventriloquist and world traveler Gordon Cobb is murdered by a gang of jewel thieves. Baffled by the contradictory clues, Inspector Queen asks his son, Ellery, to help out.

A man is framed for embezzlement and runs off to San Francisco. His wife hires Ellery Queen to try and track him down before the police get to him.