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Joel Barish, heartbroken that his girlfriend underwent a procedure to erase him from her memory, decides to do the same. However, as he watches his memories of her fade away, he realises that he still loves her, and may be too late to correct his mistake.

Russian exiles in Paris plot to collect ten million pounds from the Bank of England by grooming a destitute, suicidal girl to pose as heir to the Russian throne. While Bounin is coaching her, he comes to believe that she is really Anastasia. In the end, the Empress must decide her claim.

Professor of language and philosophy Dominic Matei is struck by lightning and ages backwards from 70 to 40 in a week, attracting the world and the Nazis. While on the run, the professor meets a young woman who has her own experience with a lightning storm. Not only does Dominic find love again, but her new abilities hold the key to his research.

Jota's suicide attempt is interrupted when a motorcyclist crashes off a bridge. After he rescues her, he decides to invent a life story for her — one of love and shared memories — creating a fragile web of deception that intertwines their fates.

Two sisters return home after a stay in a mental institution, only to face disturbing events and a strained relationship with their stepmother. As eerie occurrences unfold, dark family secrets begin to surface, blurring the line between reality and nightmare.

A neurosurgeon with a cheating wife takes an amnesiac into his home and conditions him to believe that the cheating wife is his own and to take the "appropriate" action.

In a post-war Rome (1946) a cat burglar inadvertently saves the life of a would-be suicide man who returns from the war to find that he has been betrayed by his fiancée while fighting in the war. From that moment the thief takes the ex-soldier under his wing. They leave house together for a night full of misadventures. In a streets of Rome they meet the struggling typist who can’t pay her rent and opts to street life; a wandering amnesiac who lost his memory and keeps asking everyone “Do you recognize me?”. Thieves, gamblers, hookers, policemen, soldiers and endless chain of cigarette-smoking and alcohol/espresso-drinking.

Arriving in Helsinki, a nameless man is beaten within an inch of his life by thugs, miraculously recovering only to find that he has completely lost his memory. Back on the streets, he attempts to begin again from zero, befriending a moody dog and becoming besotted with a Salvation Army volunteer.

Although barely 30, Claire believes she is showing the first symptoms of Alzheimer's disease, a condition from which her mother has recently died. Her sister, Nathalie, is certain that her memory loss, caused by a lightning strike, is temporary. In the clinic where she is being treated, Claire is attracted to Philippe, a man who is still traumatized after a car accident in which his wife and child were both killed. In spite of their personal tragedies, Claire and Philippe fall in love. When Philippe recovers, Claire moves into his home. Then Claire's condition takes a turn for the worse.

In a strange and isolated chateau, a man becomes acquainted with a woman and insists that they have met before.

David Aames has it all: wealth, good looks and gorgeous women on his arm. But just as he begins falling for the warmhearted Sofia, his face is horribly disfigured in a car accident. That's just the beginning of his troubles as the lines between illusion and reality, between life and death, are blurred.