The 39 Steps

On vacation in London, Canadian Richard Hannay becomes embroiled in a spy hunt when a German double-agent, Miss Smith, is murdered in his apartment. He is suspected of the murder, and in his search for the real murderer, he abducts an attractive blonde named Pamela. As the two travel through Britain, Pamela comes to trust Richard, and they slowly fall in love. In the end, Richard uncovers the spy ring and finally proves his innocence.