Memento’s ending reveals that Leonard Shelby already found and killed his wife’s attacker a year ago — and that the story of Sammy Jankis is his own repressed guilt. His handler Teddy has been using him as an amnesiac hitman ever since. Unable to face the truth, Leonard deliberately manufactures Teddy as his next target, and the film loops back to where it began.
Recap: Leonard’s Hunt for John G.
Leonard Shelby is a former insurance investigator with anterograde amnesia — he cannot form new memories — caused by a blow to the head during a home invasion in which his wife was attacked. Convinced a second attacker, identified only as “John G.,” murdered her, Leonard survives with a system of Polaroid photos, notes, and tattoos carved into his own body.
Two people orbit his investigation. Teddy, a chatty operator who claims to be helping, is an undercover officer named John Gammell. Natalie, a bartender, recognizes his condition and exploits it — she uses his memory gaps to get him to eliminate a man named Dodd who is threatening her. The film plays its color sequences in reverse order while black-and-white motel-room scenes run forward, the two strands converging at the end.
Woven through it all is Leonard’s recurring story of Sammy Jankis, a man with the same memory condition whom Leonard once investigated for an insurance claim. Sammy, Leonard insists, killed his own wife by accidentally giving her the repeated insulin injections she had asked for. Leonard tells the Sammy story as proof that his own condition is real and his quest is sane.
The Final Act, Scene by Scene
The final black-and-white sequence opens with Leonard leaving his motel room to meet Teddy at the end of a long investigation. Teddy tells Leonard to write his name down as “Teddy,” claiming he is undercover. Together they have identified their “John G.”: Jimmy Grantz, a local drug dealer.
Leonard is sent to an abandoned building outside town. Jimmy arrives carrying $200,000 in cash, expecting a drug deal. Instead, Leonard strangles him and photographs the body. Just before Jimmy dies, he mutters “Sammy.” Leonard has told the Sammy Jankis story to everyone he has met — the real attacker would never have known that name.
When Teddy arrives, Leonard demands the truth. Teddy cracks: he was the officer assigned to Leonard’s wife’s case, and helped Leonard track down the real attacker more than a year ago. Leonard killed him — and forgot. Ever since, Teddy has aimed Leonard at other criminals who fit the “John G.” clue, using him as a guided missile to settle scores and pocket money.
Then Teddy drops the deeper bombshell: the Sammy Jankis story is Leonard’s own. Teddy claims Leonard’s wife survived the attack, and it was Leonard himself who killed her with repeated insulin injections after she kept asking for them in despair, testing his memory. Leonard displaced his guilt onto an invented patient.
Leonard rejects it all. In a coldly lucid monologue, he reasons that without his mission he has no purpose — and if the truth destroys the mission, he will manufacture a new lie. He burns the photographs, copies Teddy’s license plate number onto a note, hides it in his car, and orders the tattoo — setting Teddy up as the next “John G.” He drives away in Jimmy’s car, the film cutting to its opening image: Leonard killing Teddy.
Competing Interpretations
Teddy is telling the truth. The widely accepted reading: every verified beat supports it. Details of the Sammy story bleed into Leonard’s own memories — a visual of Leonard sitting outside a building is later revealed as Sammy in a wheelchair, suggesting the two figures have fused. Leonard chooses the lie because it gives him purpose.
Leonard knows more than he lets on. The boldest reading suggests his final act is fully conscious self-deception — not confusion, but a choice. His monologue supports this: he knows exactly what he is doing as he plants the false clues, accepting that he will become the executioner of an innocent man.
FAQs
Did Leonard kill his own wife?
According to Teddy, yes — Leonard’s wife survived the home invasion, and Leonard later killed her accidentally with repeated insulin injections after she tested his memory. Leonard buried the truth inside the fictional Sammy Jankis story. The film never shows this independently, but the visual parallels strongly support it.
Who was the real John G.?
The actual attacker was found and killed by Leonard over a year before the film’s events — with Teddy’s help. Because “John G.” is such a common name, Teddy could keep feeding Leonard new targets, turning his revenge into a business.
Why does Leonard set up Teddy at the end?
He needs his mission to survive. Without the hunt, Leonard has no identity and no reason to go on. By tattooing Teddy’s license plate and planting false notes, he guarantees his quest — and his sense of self — continues, in a deliberate choice made in a rare moment of clarity.
Why is Memento shown in reverse order?
The reverse chronology puts the audience inside Leonard’s experience: we know only what just happened, never what came before. It makes the final revelation — chronologically the beginning of the truth — land with maximum force, since every scene we watched was built on a lie.