Calificación
Reparto

Seymour Hicks
Professor Heggie

Nancy O'Neil
Angela Heggie

Gibson Gowland
Angus

Frederick Peisley
Jimmy Andrews

Eric Hales
Jack Campbell

Ben Field
Piermaster

Hubert Harben
Prof. Blenkinsop Fothergill

Rosamund John
Maggie Fraser

Robb Wilton
Reporter

Fewlass Llewellyn
Scientist at Meeting

Stafford Hilliard
Macdonald (Uncredited)

Cyril McLaglen
Mate (Uncredited)

Clive Morton
Reporter (Uncredited)