After suffering a head injury during the Blitz, John Loder, a theatre actor comes to believe himself to be the Brighton Strangler, the murderer he was playing onstage.
An evil scientist known as "Mr. M." uses a drug he has developed called "hypnotreme" to help steal submarine equipment. Federal agent Grant Farrell is dispatched to find the mysterious villain and stop his nefarious plans.
Jim Ackland, who suffers from a head injury sustained in a bus crash, is the chief suspect in a murder hunt, when a girl that he has just met is found dead on the local common, and he has no alibi for the time she was killed.
A woman wakes up in the middle of the night on board a train, but she can't remember how she got there. Danger and suspense ensue.
Virginia Cunningham is confused upon finding herself in a mental hospital, with no memory of her arrival at the institution. Tormented by delusions and unable to even recognize her husband, Robert, she is treated by Dr. Mark Kik, who is determined to get to the root of her mental illness. As her treatment progresses, flashbacks depict events in Virginia's life that may have contributed to her instability.
A young doctor falls in love with a disturbed young woman and apparently becomes involved in the death of her husband. They head for Mexico trying to outrun the law.
A man comes to Stockholm's central station. He does not know who he is or where he has been. He has some keys and a phone number. Perhaps he is the escaped sex maniac the police are searching for. A waitress at a café tries to help him.
An Englishman has been working in the US so long he now speaks with an American accent. He is drafted into the British Army during WWII but is injured and loses his memory. Because he talks like an American, the doctors repatriate him to the States where he is housed with a New York family. After the war they all travel throughout Europe, searching for the women he still remembers in the hope of restoring his lost memory
Eeva Isokari flees her home from the jealousy of her husband, judge Lauri. The next day, a body is found on the railway tracks. Lauri thinks his wife is dead. The woman, who has lost her memory, has ended up in a prison run by her husband.
On his way to Lin'an, Lee Tsi-wan survives an attempt on his life by an employee but loses his memory. Maid Siu Yuet-mui of the Sek family comes to the help of the distressed. Lady Sek marries Siu to Lee to vanquish her husband's licentious interest in the maid. The loving couple raises a daughter Siu-fa. A few years later, Wan is hit on the head away at work and regains his memory. The homesick traveller returns to his native home, leaving behind Siu and daughter. The mother and daughter look for the missing man but he hasn't the faintest idea who they are. Apprehended by the incident, Siu plunges into depression. One day, Lee passes by the stone house where the couple used to live in and recalls past episodes of his marriage. The family is happily reunited.
A man who has been left for dead by the impostor who takes his place returns to bring him to justice.
A speed-boat racer suffers amnesia after an boating accident and goes to his isolated villa to recuperate. His relationship with his wife is troubled, so he starts an affair (sort of) with the another woman, which results in one of the three of them being shot. But there are several more twists--and more murders--to come.
In London, A man who has amnesia attempts to uncover the truth about his identity. A menacing individual accuses him of betrayal, and soon more pieces of his puzzling past begin to fall in place.
A maid at a seaside hotel nurses to health a man she found on the beach who has lost his memory.
Fashion model Emanuelle is experiencing psychotic freakout every time she has sex. Haunted by memories of sexual abuse from the men in her life, including her father, she turns to Dr. Gardner, who offers help while she resides at his mental health center.
Michael is a successful actor, but he has a scandal in his past: at a tender age he knifed his father to death. He and his girlfriend Deborah go to his mother's for the weekend, and are joined by the director and others from a recent film project, who are given a rather cool reception by the superstitious housekeeper Oliver. Soon rude things begin happening to some of the guests, and Michael fears a repeat of his nightmare past is in progress.
Anne is convinced she has found her husband's corpse, but Dr. Mark can only find out that the man has gone home. When he comes back, his wife does not trust Mark, who believes she suffers from schizophrenia.
Basheer (Jagathy) is rescued by a cargo ship while lost at sea. Basheer has had a partial memory loss and he struggles to find out what has happened to him. The captain of the ship (Lalu Alex) tries to get him back to land, but he runs into several legal troubles due to the lack of documents with Basheer to prove his identity. Bhaskara Pillai (Mamootty), a lawyer decides to help out Basheer seeing his plight. The plot thickens when there's an attempted murder on Basheer.
Michele is a Communist MP who loses his memory in a car crash—although nobody seems to notice. Over the course of a water polo match ahead of election day, he begins to remember his past life, revealing the picture of a man whose personal and political identity crisis mirrors the one of Italian communism.
A wounded man finds himself in an unknown place nursed by a woman and realizes he has amnesia. He keeps getting flashes of his past and decides to uncover his true identity with the help those flashes.