On a train headed for England a group of travelers is delayed by an avalanche. Holed up in a hotel in a fictional European country, young Iris befriends elderly Miss Froy. When the train resumes, Iris suffers a bout of unconsciousness and wakes to find the old woman has disappeared. The other passengers ominously deny Miss Froy ever existed, so Iris begins to investigate with another traveler and, as the pair sleuth, romantic sparks fly.
Margaret Lockwood
Iris Matilda Henderson
Michael Redgrave
Gilbert Redman
Paul Lukas
Dr. Hartz
May Whitty
Miss Froy
Basil Radford
Charters
Naunton Wayne
Caldicott
Cecil Parker
Eric Todhunter
Linden Travers
'Mrs.' Margaret Todhunter
