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.

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.