In ‘Oppenheimer,’ Christopher Nolan builds a thrilling, serious blockbuster for adults

Christopher Nolan has never been one to take the easy or straightforward route while making a movie

Christopher Nolan has never been one to take the easy or straightforward route.

He shoots on large-format film with cumbersome cameras. He prefers practical effects and real locations — even when that means recreating an atomic explosion in the harsh winds of the New Mexico desert for “Oppenheimer,” out July 21.

Though, despite internet rumors, they did not detonate an actual nuclear weapon.

And as for the biography that inspired his newest film, Kai Bird and Martin J. Sherwin’s “American Prometheus” was simply the starting point from which Nolan crafted a beguiling labyrinth of suspense and drama.

It’s why Nolan has become a franchise unto himself — the rare auteur writer-director who makes films that are both intellectually stimulating and commercial, accounting for more than $5 billion in box office receipts. That's part of the reason why he’s able to attract Oscar winners and movie stars not just to headline his films, but also to turn out for just a scene or two.

“We’ve all been so intoxicated by his films,” said Emily Blunt, who plays J. Robert Oppenheimer’s wife, Kitty. “That exploration of huge themes in an entertaining way doesn’t happen. It just doesn’t happen. That depth, the depth of the material, and yet on this massive epic scale.”

In the vast and complex story of the brilliant theoretical physicist who oversaw the Manhattan Project and the development of the atomic bomb during World War II, Nolan saw exciting possibilities to play with genre and form. There was the race to develop it, espionage, romance, a courtroom drama, bruised egos, communist panic, and the burden of having created something that could destroy the world.

And then there was the man himself, who, after achieving American icon status, saw his reputation and sense of self annihilated by the very institutions that built him.

“It’s such an ambitious story to tell,” said Matt Damon. “Reading the script, I had the same feeling I had when I read ‘Interstellar,’ which was: ‘This is great. How the hell is he going to do this?’”

Nolan turned to Cillian Murphy to portray Oppenheimer. Murphy had already acted in five Nolan films, but this would be his first time as a lead — something he had secretly pined for.

“You feel a responsibility, but then a great hunger and excitement to try and do it, to see where you can get,” said Murphy, who prepped extensively for six months. “It was an awful lot of work, but I loved it. There is this kind of frisson, this energy when you’re on a Chris Nolan set about the potential for what you’re going to achieve.”

It would be an all-consuming role requiring some physical transformation to approximate that famously thin silhouette. A complex, contradictory figure, Oppenheimer emerged from a somewhat awkward youth to become a renaissance man who seemed to carry equal passion for the Bhagavad Gita, Proust, physics, languages, New Mexico, philosophical questions about disarmament and the perfectly mixed martini. But Murphy knew he was in safe hands.

“He’s the most natural director I’ve ever worked with. And the notes that he gives to an actor, are quite remarkable. How he can gently bring you to a different place with your performance is quite stunning in such a subtle, low-key, understated way,” Murphy said.

Nolan wrote the main timeline to represent Oppenheimer’s subjective experience. The other timeline, filmed in black and white, is more objective and focused on Lewis Strauss (Robert Downey Jr.), a supporter of the development of the more destructive hydrogen bomb.

“Oppenheimer” is Nolan’s first R-rated film since 2002's “Insomnia.” It fits the gravity of the material.

“We’re dealing with the most serious and adult story you could imagine — very important, dramatic events that changed the world and defined the world we live in today,” Nolan said. “You don’t want to compromise in any way.”

Much of the filming took place in New Mexico, including at the real Los Alamos laboratory.

“It was a very focused set — fun set as well, not too serious. But the work was serious, the sweating of the details was serious,” Blunt said.

When it came to recreating the Trinity test, the first nuclear detonation, art and life blended in a visceral way.

“We wanted to put the audience there in that bunker,” Nolan said. “That meant really trying to make these things as beautiful and frightening and awe inspiring as they would have been to the people at the time.”

Though no real nukes were used, they did stage a lot of real explosions to approximate the blindingly bright atomic fire and mushroom cloud.

“To do those safely in a real environment out in the nighttime desert, there’s a degree of discipline and focus and adrenaline and just executing that for the film that echoes and mirrors what these guys went through on the grandest scale in a really interesting way,” Nolan said.

The weather also “did what it needed to do, as per history,” Murphy said, as the wind picked up and whipped around the set.

“The extremity of it put me very much in the mindset of what it must have been like for these guys. It really felt like we were out in it,” Nolan said.

The hope is that when “Oppenheimer” is unleashed on the world, audiences will seek it out on the biggest screen they can find. The film has a run in IMAX theaters around the country, not something often afforded serious-minded, R-rated movies in the middle of the busy summer season. But this is also the essential Nolan impossibility: As more auteurs have had to compromise, Nolan continues to make his movies on the grandest scale.

“Each of his films has been revolutionary in their own way,” Murphy said. “It’s an event every time he releases a film, and rightly so.”