Also Known As:
- La dama desaparece
- Une femme disparaît
- Alarma a l'exprés
- Alarma en el expreso
- Dama zniknela
- Desaparecida!
- Een vrouw verdwijnt
- Een vrouw wist te veel
- Eine Dame verschwindet
- En dam försvinner
- En kvinde forsvinder
- En kvinne forsvinner
- Ha-Geveret Ne'elmet
- I exafanisis
- I exafanisis tis kyrias
- I kyria exafanizetai
- La signora scompare
- Londoni randevú
- Nainen katoaa
- Starsza pani znika
- Alfred Hitchcock
- Ethel Lina White (story "The Wheel Spins")
- Sidney Gilliat (as Sidney Gilliatt)
- Frank Launder
- Margaret Lockwood ... Iris Henderson
- Michael Redgrave ... Gilbert
- Paul Lukas ... Dr. Hartz
- Dame May Whitty ... Miss Froy
- Cecil Parker ... Mr. Todhunter
- Linden Travers ... 'Mrs.' Todhunter
- Naunton Wayne ... Caldicott
- Basil Radford ... Charters
- Mary Clare ... Baroness
- Emile Boreo ... Hotel Manager
- Googie Withers ... Blanche
- Sally Stewart ... Julie
- Philip Leaver ... Signor Doppo
- Selma Vaz Dias ... Signora Doppo (as Zelma Vas Dias)
- Catherine Lacey ... The Nun (as Catherine Lacy)
- Josephine Wilson ... Madame Kummer
- Charles Oliver ... The Officer
- Kathleen Tremaine ... Anna
- Alfred Hitchcock ... Man in London Railway Station
- Roy Russell ... Violinist