Inception is a heist movie that takes place almost entirely inside other people’s heads. Christopher Nolan hands Dom Cobb a crew, a target and an impossible job — not to steal an idea but to plant one — then folds the world around them until corridors rotate, cities buckle and time runs at a different speed on every floor of the dream.

What makes it more than a gimmick is how seriously Nolan treats his own rules. He builds a whole grammar of dream-logic — kicks, totems, limbo, the law that you never remember how you arrived — and trusts the audience to keep up while the film moves like a runaway train. It is a blockbuster engineered as a puzzle box, and it never once slows down to apologise for being clever.

The film

Cobb is a fugitive, locked out of his home and his children, offered one last job by the industrialist Saito: perform inception, the near-mythical act of planting an idea so deep the target believes it is his own. To do it he assembles a team — a point man, a forger, a chemist and a young architect named Ariadne, whose task is to design the dream worlds they will descend through, level by level.

Nolan stages the descent as a stack of nested heists, each layer running on its own clock, and Wally Pfister’s camera makes the impossible feel heavy and physical: the Paris café that detonates in slow motion, the corridor fight Joseph Gordon-Levitt performs in a rotating set built for real, the snowbound fortress of the deepest level. Hans Zimmer’s score — all braying horns and a slowed-down Édith Piaf — turns the ticking clock into something close to dread.

DiCaprio, Cotillard and the architecture of grief

Leonardo DiCaprio gives Cobb the same haunted exhaustion he brought to Shutter Island the same year — a man so consumed by guilt that his own subconscious has turned against him. The heist is the plot, but the real story is his marriage, and Marion Cotillard, as the lost Mal who keeps sabotaging the mission from inside Cobb’s mind, is the film’s broken heart.

Around them Nolan stacks one of the deepest benches of his career: Joseph Gordon-Levitt’s unflappable Arthur, Tom Hardy’s louche Eames, Ken Watanabe’s Saito, Elliot Page as the audience’s way in, Cillian Murphy as the mark whose damage we come to feel, and Michael Caine anchoring it all in a handful of minutes. Nobody is wasted; everybody understands the assignment.

Why it endures

Inception arrived in the summer of 2010 as something the multiplex had stopped believing was possible: an original, big-budget spectacle built from scratch rather than from a comic book or a sequel — and audiences rewarded it with more than 800 million dollars. It collected four Academy Awards for its craft (cinematography, sound editing, sound mixing and visual effects) and lodged itself so deep in the culture that the spinning top became its own punctuation mark. More than a decade on, the argument about that final shot has never quite stopped, which is exactly the point.

Our verdict

A blockbuster with the ambition of an art film and the engine of a thriller, Inception is Nolan working at the height of his powers — dense, propulsive, emotionally colder than its admirers admit and all the more hypnotic for it. Whether or not the top falls, it remains one of the most audacious things a major studio has bankrolled this century.