Adapted by Eric Ambler from his own novel, The October Man centers around Jim Ackland (played by John Mills), who has been involved in a terrible accident that killed a friend's daughter and has given Ackland a brain injury. Despondent after his release from the hospital, Ackland moves into a hotel, where he meets Molly Newman (Kay Walsh). Molly has a hard time making ends meet, and must fight off the advances of another man who is willing to pay her rent if she will sleep with him. She asks Ackland to loan her money for the rent; he does, but she is found murdered soon after. Ackland is suspected of committing the deed and, due to his mental problems, he doesn't know if he is innocent. With the help of the kindly Jenny (Joan Greenwood), who believes in him, he sets out to clear his name. The October Man was the directorial debut of Roy Ward Baker, who had been an assistant to Alfred Hitchcock.
by Craig Butler synopsis