One of the most repeated themes in films was originally perfected by Hitchcock in this masterpiece. The stories of people going missing without a trace and a lonely soul fighting against all odds to prove that the missing person exists has been retold after Lady Vanishes umpteen times and most recently in the Jodie Foster film "Flight Plan" but none of them can come anywhere near Hitchcock.
The fast pace of the film its excellent actors and the settings in Black and White make it memorable. The "Secret Agent" Miss Froy itself is the most unlikely spy one may think of but the story telling and the Director makes it plausible. The period setting of the film makes it obvious that the villains are Nazis but steers away from calling them so but does not restrain itself in depicting them as despicable villains telling the world in 1939 what it was in store for.
What more than to call it an unforgettable Classic.
Krishna Kumar Menon, Chennai(Madras), India.