The Long Memory

The Long Memory is a black and white 1953 film directed by Robert Hamer and based on the 1951 novel of the same name by Howard Clewes. A crime thriller filmed on the North Kent Marshes on the Thames Estuary and the dingy backstreets of Gravesend now long since demolished, its bleak setting and grim atmosphere have led to its acclaim as a British example of film noir.

Upon his release, he sets out to get even with the witnesses. He is kept under surveillance by the police on the orders of Superintendent Bob Lowther John McCallum, who is married to Fay. Living rough on the barge, Davidson begins searching for the witnesses. When newspaperman Craig comes to see him, Davidson throws him out, but Craig tumbles down an open hatch and is knocked unconscious. Davidson carries him out. When he awakens, Craig informs Davison that Captain Driver drank himself to death four years before.Three people attempt initially unsuccessfully to befriend Davidson Jackson, a kindly old hermit from whom he rents the barge Ilse, a traumatised wartime refugee who falls in love with him after he inadvertently rescues her from being attacked by a sailor and allows her to stay overnight on the barge and Craig, who suspects him to be innocent. ........

Source: Wikipedia