(Originally published in July 2023, this review was updated on July 15, 2026. Oppenheimer won seven Academy Awards in 2024, including Best Picture and Best Actor for Cillian Murphy. It is currently streaming on Peacock.) Christopher Nolan has spent his career making films about men trapped by time: inside it, outside it, manipulating it. Oppenheimer is a film about a man trapped by consequence. J. Robert Oppenheimer built the weapon that ended one war and began the permanent anxiety of every war that followed. Oppenheimer is about what that does to a person and what it reveals about the systems of power that both use and then discard the people who serve them.
It is the most human film Nolan has made. It is also, in places, genuinely terrifying.
The Story
Based on Kai Bird and Martin J. Sherwin’s biography American Prometheus, the film tracks Oppenheimer (Cillian Murphy) from his early years as a student in Germany (brilliant, restless, paradoxically struggling with mathematics) through his return to the United States, his groundbreaking work in quantum mechanics and nuclear physics, his recruitment by Lieutenant General Leslie Groves (Matt Damon) to lead the Manhattan Project, and finally to the security hearing that effectively ended his public life.
Nolan structures this story across two parallel timelines. The first, shot in colour, follows Oppenheimer’s perspective. Subjective, immersive, occasionally hallucinatory. The second, shot in black and white, covers the Senate confirmation hearings of Lewis Strauss (Robert Downey Jr.), years later, where the damage done to Oppenheimer’s reputation becomes fully visible. The intercutting between these timelines is the film’s argument. That history, filtered through political self-interest and bureaucratic machinery, becomes something flatter and more dishonest than what actually happened to the people inside it.
At times, the debates between government officials and scientists are dense. Nolan trusts his audience to keep up. That trust is largely justified.
Cillian Murphy’s Career-Defining Performance
It would be easy to write about Oppenheimer without fully accounting for what Cillian Murphy does at its centre. That would be a mistake.
Murphy described the challenge of the role in terms that explain why it works:
He had all of the complexities and contradictions that we do as human beings, except he happened to be one of the most brilliant minds that ever lived. He was arrogant, and he was vain. And he was naive. And he was conflicted. And he was egotistical, but he was also insecure. He was all of those things.
The performance that came from that understanding is on point, interior, and completely inhabited. Murphy astoundingly carries Oppenheimer’s inner turmoil throughout. His thousand-yard stare that becomes the film’s visual motif is the perfect expression for a man who can see the full consequences of what he has set in motion and cannot look away.
The Oscar win, a first after two decades of working with Nolan, was well deserved. Not since Heath Ledger’s Joker has a Nolan film produced a performance of this specific gravity.
The Supporting Cast
Robert Downey Jr. plays Lewis Strauss with the contained menace of a man who has learned to weaponise patience. Every gesture is calibrated. Every expression costs something. Downey Jr. won the Oscar for Best Supporting Actor, his first Academy Award after two prior nominations spanning three decades. It is the finest work of his career and the performance that most clearly justifies the film’s non-linear structure. Strauss only makes complete sense once you understand what he has been quietly engineering for years.
Emily Blunt’s Katherine Oppenheimer is given more space than the biopic genre usually affords such roles. Her confrontation with the security panel, flat-voiced, furious, utterly controlled, best captures what the film is really about: what it costs the people around a great man to sustain his myth.
Matt Damon’s Groves is a man who understands Oppenheimer’s genius without quite understanding Oppenheimer. Gary Oldman’s Truman appears briefly but lands with enormous force. Rami Malek and Kenneth Branagh round out an ensemble that never wastes a scene.
Cinematography, Sound, Editing
Hoyte van Hoytema’s cinematography heightens suspense, giving us a sense of involvement in one of the darkest tales in human history. The larger-than-life frames expertly capture the contrasting landscapes, creating a sense of awe and wonder.
The Trinity test sequence is the film’s centrepiece and its greatest technical achievement. Nolan achieved it largely without digital effects, igniting smaller munitions and filming them in slow motion. The result is genuinely frightening. What makes it extraordinary is not the explosion itself but what follows. Nolan and van Hoytema hold the image for an unnerving length of time before allowing sound to arrive. When it does, Richard King’s sound design makes the silence that preceded it feel like a breath the film has been holding since its opening frame.
Beneath the film’s surface is Ludwig Göransson’s brilliant score, anxious, relentless, refusing to swell at the expected moments. It is the film’s most underrated element.
Jennifer Lame’s editing manages three distinct narrative timelines without losing the audience. More importantly, it adds emotional weight to the story’s moral argument. By fusing past and present, it makes the consequences of Oppenheimer’s choices feel present tense rather than historical.
What the Film Gets Right (And What It Leaves Out)
Oppenheimer is a film about a man wrestling with what he has done. That is its strength and its limitation.
The film’s moral seriousness is genuine. The depiction of Oppenheimer’s inner conflict: his arguments with colleagues, his confrontation with Truman, his testimony at the security hearing, captures something true about what it means to be responsible for something you cannot take back. Nolan’s portrayal serves as a powerful reminder of the complex ramifications of scientific achievement, and the thin line between development and destruction.
But the film spends three hours on the ethics of the bomb while its victims in Hiroshima and Nagasaki remain largely absent from the screen. Spike Lee put it plainly: “If it’s three hours, I would like to add some more minutes about what happened to the Japanese people.” That is worth calling out. It does not diminish what Nolan has achieved. But it is a genuine omission in a film that otherwise takes moral seriousness so seriously.
The Verdict
Oppenheimer delves deep into the limitations of human morality and the implications of technological advancement through its compelling story and outstanding performances. Nolan’s painstaking attention to detail and ability to create an immersive cinematic experience offers a thought-provoking commentary on the socio-political landscape that resonates far beyond 2023.
That Nolan’s most morally serious and most formally ambitious film is also one of the biggest box office successes of its year is also worth taking note.
Without waxing lyrical, Oppenheimer is as close to essential cinema as 2023 produced.
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