The Long Memory is a black-and-white 1953 British crime film directed by Robert Hamer and based on the 1951 novel of the same title by Howard Clewes. Filmed at locations such as London Waterloo railway station, the North Kent Marshes on the Thames Estuary, and the dingy backstreets of Gravesend, Kent, mainly Queen Street, its bleak setting and grim atmosphere have led to its acclaim as a British example of film noir. Plot Phillip Davidson boards a boat and embraces Fay Driver. Then he goes down below to try to convince her alcoholic father, Captain Driver, not to involve Fay in his criminal activity. However, Boyd brings aboard Delaney (a man he has agreed to smuggle out of the country) and two henchmen. When Boyd demands that Delaney pay him £500, rather than £200, a fight erupts, and Boyd knocks Delaney out. A broken oil lamp starts a fire, attracting the attention of the authorities, and Philip is fished out of the water. A charred corpse is found in the sunken boat. The Drivers and Tim Pewsey perjure themselves by identifying the dead man as Boyd, rather than Delaney, and claiming there was no other man present. This leads to Philip's conviction for Boyd's murder. Granted parole, he is released after 12 years in prison. Upon 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, who is now married to Fay. Philip finds an abandoned barge claimed by Jackson, a kindly old hermit. His plan is to live rough on the barge while he searches for the witnesses. But three people attempt – initially unsuccessfully – to befriend him. First, Jackson withdraws an initial request for rent. Then Craig, a newspaperman who suspects him to be innocent, arrives; Philip throws him out, but Craig tumbles down an open hatch and is knocked unconscious, and Philip rescues him. Finally, he happens upon a sailor attempting to rape Ilse, a traumatised refugee. When he rescues her and allows her to stay on the barge, she falls in love with him. Informed by Craig that Captain Driver has died, four years earlier, Philip stalks Pewsey, with Lowther and Craig on his trail. Pewsey is frightened into confessing to Lowther that there was another man present at the murder. Now Lowther's marriage comes under increasing tension as he