Joker: Folie a DeuxSave

Two years after the events of the first film, Arthur Fleck (Joaquin Phoenix) is being held at Arkham State Hospital awaiting trial for the five murders he committed during his rampage through Gotham — including the on-air shooting of late-night host Murray Franklin. He is gaunt, medicated, and openly mocked by orderlies, and the once-electric Joker persona that radicalised a city has shrunk back into the timid, soft-voiced man who lived with his mother. Arthur is plainly being kept on a maintenance dose of antipsychotics to dull him for trial, and his old fantasies — the dancing, the imagined girlfriend, the imagined success — have been replaced by silence and small humiliations.

A sympathetic guard (Brendan Gleeson) recognisizs that Arthur is, on his bad days, more victim than monster, and arranges a small kindness: a transfer for one hour a week into the lower-security wing where Arkham runs a music-therapy choir for patients with less violent histories. There, in a sun-yellowed room full of plastic chairs and an off-tune piano, Arthur meets Lee Quinzel (Lady Gaga), a wide-eyed inmate who claims to be from a working-class Gotham family that lived in his old apartment building. Lee tells Arthur she watched the Murray Franklin episode obsessively as a teenager, that she set her own family's apartment on fire because the Joker showed her how to laugh, and that everything Arthur thinks is broken about himself is the most beautiful thing in the world.

Lee's affection unlocks the part of Arthur that has been chemically buried for two years. He hides his medication, sneaks her notes, sings duets with her during therapy — and as he stops swallowing pills, the film begins to fracture into musical fantasy. Whenever Arthur and Lee touch, the world snaps into a Vincente Minnelli-style soundstage. They tap-dance on top of Arkham's roof, croon 'For Once in My Life' on a TV variety stage, twirl through a courtroom that has been swapped for a Technicolor cabaret. The film never fully commits to whether these numbers are shared hallucinations, Arthur's solo daydreams, or symbolic flashes — but it is clear that for Arthur, the songs are the only place where he is loved and the only place where he is finally Joker again.

The musical interludes punctuate the film's spine, which is Arthur's televised murder trial. Public defender Maryanne Stewart (Catherine Keener) builds a defense around dissociative identity disorder: she argues that Arthur Fleck is mentally ill, that Joker is a separate alter spawned by abuse and neglect, and that the man who shot Murray Franklin is no more legally responsible than the man who curled up in his mother's lap. The District Attorney, Harvey Dent (Harry Lawtey, in his first significant role in the film), counters with a methodical reconstruction of the killings — laying out Penny Fleck's adoption papers, the asylum records, and Murray's last broadcast — to argue that Arthur knew exactly what he was doing and revelled in it.

Outside the courthouse, a cult has formed. Hundreds of clown-masked supporters chant Arthur's name, wave hand-painted Joker placards, and treat the trial as a national referendum on Gotham's class divide. Lee, granted parole midway through the trial because her crimes were comparatively minor, becomes the public face of this movement — appearing on talk shows, leaking trial transcripts, and pushing Arthur to abandon the 'I have a disorder' defense and instead embrace Joker on the stand as a political statement. Arthur, who is increasingly intoxicated by the cheering crowds, fires his lawyer, dismisses the diminished-capacity defense, and announces to the courtroom that there is no Arthur Fleck — only Joker.

Self-representing and dressed in Joker make-up, Arthur tries to give the courtroom what they came for. He humiliates witnesses, plays to the cameras, and turns his cross-examination of an old colleague into stand-up. But Gary, the man Arthur spared in the original film because he was 'always nice to me,' takes the stand. He looks Arthur in the eye and tells the court that he is afraid every day, that Arthur is not a symbol and not a hero, just a man who killed people. Gary leaves the stand sobbing, and the cheering crowd outside the courtroom suddenly seems very far away. The illusion that Joker is a liberation movement collapses inside Arthur's own head.

Then the bombs detonate. A Joker-cult member parks a car bomb outside the courthouse to free Arthur. The blast kills several people, including parts of the prosecution team, and a clown-masked rioter spirits Arthur away in the chaos. For the briefest moment the film flirts with becoming the Joker origin story the audience has been waiting for: Arthur stumbles down a smoking Gotham street to applause, framed exactly like the iconic stair sequence from the first film. He sees Lee in the crowd — pregnant, ecstatic, screaming his name — and the music swells.

Arthur stops. He looks at Lee, at the strangers chanting for him, at the body of the bailiff under the rubble, and he keeps walking. He does not embrace her. He does not lead the riot. He turns himself back in. In the back of the police van, alone with a sympathetic guard, he confesses quietly that he was never Joker — that he is just a sick, scared man named Arthur Fleck — and that whatever it was that the city wanted him to become, he is not it. The next time we see Lee, she is alone in her apartment singing 'That's Life' to herself, the camera holding on her face long enough to make it clear that the dream of folie à deux is one-sided now.

Arthur dies in the corridor, alone. The screen cuts to black on a final, half-laughed apology and the sound of the unnamed inmate's giggling. The film's last image is the carved smile spreading across the new patient's face — a transmission, not a coronation. Folie à Deux ends not as a Joker origin story, but as the story of a man who failed his own legend and the franchise's polite, formal refusal to give the audience the supervillain it kept demanding. Critics split bitterly over whether this is brave deconstruction or hostile contempt, but Phillips's intent is unmistakable: the cult of Joker is the disease, and Arthur Fleck was always its first, most pitiable patient — never its prophet.