Robert Donat is the innocent man who gets caught up in an espionage plot and is suspected of murdering a woman in his Londan flat. He then goes up to Scotland to try and clear his name where he is forced to team up with Madeleine Carroll. This is a good version of the story and an early example of Alfred Hitchcock's work who gets good performances from both Robert Donat and Madeleine Carroll. This action thriller from Alfred Hitchcock contains the first examples of many of his signature tropes, like mistaken identitiy and the innocent woman. Whilst it is a spy thriller, it also has a romantic comedy theme, especially when Robert Donat and Madeleine Carroll are handcuffed together. Madeline Carroll in this film is the first of Hitchcock's blonde females and is the first of sparring opposite couple that became popular in later films. The film inlcudes the first chase by a helicopter. What is interesting is that running through the film are different marriages, both between the two main characters and other side characters. Although made in Britian this was Hitchcock's first successful film in America. In effect Hitchcock remade this film as North By North West.
3/5 
Robert Donat
Madeleine Carroll
Lucie Mannheim
John Laurie
Helen Haye
Frank Cellier