Ray Milland as Stephen Neale

Marjorie Reynolds as Carla Hilfe

Carl Esmond as Willi Hilfe

Hillary Brooke as Mrs. Bellane #2, spiritualist

Percy Waram as Inspector Prentice

Dan Duryea as Cost aka Travers the tailor

Alan Napier as Dr. Forrester

Erskine Sanford as George Rennit, private investigator

Harry Allen as Tailor's Delivery Man (uncredited)

Frank Baker as Scotland Yard Man (uncredited)

Vangie Beilby as Old Lady at Charity Bazaar (uncredited)

Evelyn Beresford as Fat Lady at Charity Bazaar (uncredited)

Aminta Dyne as Mrs. Bellane #1 - fortune teller (uncredited)

Byron Foulger as Mr. Newby (uncredited)

Colin Kenny as Scotland Yard Man (uncredited)

Connie Leon as lady Purchaser of Cake (uncredited)

Ottola Nesmith as Woman at Admission Gate (uncredited)

Cyril Delevanti as Railroad Agent (uncredited)