John Loder as Inspector Jim Grant

Anna Lee as Jennie Carr

Francis L. Sullivan as Hugo Brant

Frank Cellier as Sam Pryor

Desmond Tester as Arnold James

Athene Seyler as Aunt Veronica

William Dewhurst as Mortimer

Drusilla Wills as Mrs. Carr

Jerry Verno as Steward

James Pirrie as Billy Cooper

Ellen Pollock as Miss Harvey

Arthur Goullet as Henry Abel

Peter Bull as Spurgeon

Tony Quinn as Harrigan

H.G. Stoker as Captain