"There is a mystery and a search and a femme fatale, so and felt right," says Schreier, who showed both those films to his cast.

And ?

"OK, maybe not the story. But the framing, and the bigness of some of the scenes about people in high school, which is the same bigness Scorsese used in that movie," Schreier says, then laughs knowingly at the outsized comparison.

The geekish director looks to tap into those influences in his new film, even as he plays to a more traditional teen narrative.

As written by the novelist John Green and screenwriters Scott Neustadter and Michael H. Weber, Q (short for Quentin) is neither cool nor an outcast. He is merely a reasonably bright high school senior with plans for Duke medical school when he graduates and leaves his Florida neighbourhood behind.

OK, so maybe he has some unresolved feelings for neighbour and childhood friend Margo (Delevingne, a British model, in her biggest role to date), who's since gone on to hang with the popular kids and whose life he romanticises. It's nothing graduation can't cure.

Yet when Margo enlists Q on a revenge mission one night and then disappears the next day, it sets the hero and his friends on a path to find her (with the help of some clues she's left behind) - and, possibly, to make more existential discoveries.

Schreier scatters with his own breadcrumbs. Some of the cinematic nods are obvious - Q and his friends attempt a Humphrey Bogart-Philip Marlowe voice as they begin their quests. Others are more subtle, such as mood-music driving scenes at dusk that will recall 1980s' neon-noir titles such as , or shots of the boys on their adventure that will evoke throwbacks such as .

Schreier, 33, is an unlikely person to tackle this teen material. Just three years ago, he made , a gentle futuristic story about an ageing burglar and his new pet machine. The movie had its premiere at Sundance, where it received nice notices. Schreier seemed likely to move to a prestige drama or maybe a slightly bigger science-fiction movie.

But the director was hardly a sci-fi guy - he grew up in Berkeley, and his parents wouldn't even allow him to see . He read the novel and thought it a fitting way to branch out, then sold himself to Fox 2000 and production company Temple Hill as a director who's adept at humanism with a genre dusting.

"I'm not sure there are a lot of comparisons, but if you're going to draw a line from to this movie, it's that they each have a bunch of genres that really shouldn't be in the same film but need to be held together," he says.

Schreier is part of a larger class of contemporaries tackling big studio material just a short time after a quirky passion project. director Colin Trevorrow scored the biggest hit of the summer a few years after making the off-beat time-travel dramatic comedy , while Schreier's friend and New York University classmate Jon Watts has gone from the indie road thriller to the new movie before the former has even hit theatres.

But as much as it suggests the movie industry's willingness to do away with dues-paying, the jump also reflects a reality about today's directors: if you want to work in tentpole-era Hollywood, you'd better be ready to mould your style to a studio's slate and needs.

The adaptation process on wasn't easy. Green's novel, written four years before , lacks the dramatic hook of his later success, not to mention the baroque conceits of a or . Though there is ostensibly a missing-persons undertone to the Margo tale, that's hardly the movie's point. The biggest mystery in is the puzzle of growing up.

"We are the no-one-dies movie," Schreier says, smiling as he makes clear he may be a little tired of the question. "It is a little unfortunate no one turns into a vampire."

And even though book and movie have a big road trip - a piece de resistance of sorts - there are other less filmable elements, such as when Q reads Walt Whitman to help track down Margo. (The words appear on screen, fleetingly.)

Green says he had his own doubts about the project.

"I didn't see it as very adaptable, to be honest," says the novelist, who was on set during the shoot advising Schreier and the actors. "But Scott and Mike and Jake found a structure that worked and this through-line of all these people mis-seeing or essentialising each other, which I thought really capture the book."

He adds: "It's nice to have a movie for young people that doesn't fit into genre expectations."

To adapt material like this, it also helps to have a certain clarity of purpose. Schreier, who is soft-spoken, manifests an intensity on set. "Has Jake managed to convince you he's low-key?" Wolff says, laughing when told of a reporter's impression of the director. "That's good that he's able to trick you."

Schreier is intense about his filmmaking. Steven Soderbergh is a particular influence, he says. In , Schreier sought, like Soderbergh might, to give a lived-in quality to big moments and to bring an attention to detail even to casual scenes.

But he says he also found there were elements he couldn't control, such as the overall tone of the movie. "It's strange. I think I'm pretty dark and cynical, and these movies keep coming out light," Schreier says. "But that's OK. Nat called me Diet Fincher at one point. I can live with that."

opens on August 13