Iris Carr is on her way home to England from a vacation in a remote corner of Europe. Feeling alone and afraid, she is quite glad to become acquainted with a strange woman: Miss Froy. But then Miss Froy vanishes - and no one on the train seems to remember her.

Ethel Lina White (1876--1944) was one of the best known British crime writers during the 1930s and '40s. One of her novels -"The Wheel Spins" - was adapted by Alfred Hitchcock for his famous film "The Lady Vanishes".