Johnny Nobody

Johnny Nobody is a 1961 UK drama film made by Viceroy Films Limited, with John R. Sloan as producer, and Irving Allen and Albert R. Broccoli as executive producers. It was directed by the British film and stage actor Nigel Patrick, who also took a leading role. The film also featured the BAFTA-winning actress Yvonne Mitchell (with whom Patrick had starred in the 1959 production of Sapphire), and the American actors William Bendix and Aldo Ray. Cinematography was by Ted Moore. The film was shot at Ardmore Studios in Bray, Ireland.
In the film, a man arrested for murder claims to be suffering from amnesia. Father Carey investigates the case, and looks for the killer's motive. 
Story.
James Ronald Mulcahy (William Bendix), an Irish American writer, is murdered moments after he has dared God to strike him dead. His murderer (Aldo Ray) looks for help from the man who must decide his fate, the local priest, Father Carey (Nigel Patrick). The killer is tagged "Johnny Nobody" by the press because of his claim to have total amnesia, but further investigation by Carey leads him to question whether or not "Johnny" was acting for God or, as seems more likely, a woman known as Miss Floyd (Yvonne Mitchell) who turns out to be his wife.