A 19-year-old actor slammed a mailbox shut on a live grasshopper, and nobody yelled cut. A grown man burned down the only house his family ever lived in, and this time the fire was real. And a future Oscar winner got fired from the role that would make him famous — by Johnny Depp.

These are not scenes from a movie. They are the buried, stranger-than-fiction details behind “What’s Eating Gilbert Grape,” the quiet 1993 Iowa drama that almost nobody saw in theaters and that has since become one of the most quietly revered films of its decade.

Leonardo DiCaprio was 19 years old when he arrived on a rural Texas set standing in for small-town Iowa in late 1992. He was cast as Arnie Grape, a boy with a developmental disability, a role that would earn him his first Academy Award nomination and announce the arrival of a generational talent.

What most fans never figured out is how close he came to never getting the part at all — and how brutal, strange and unexpectedly tender the road to that performance really was.

According to DiCaprio’s own account years later, director Lasse Hallström had genuine doubts about casting him. The filmmaker worried that a magazine-ready teenager was simply too handsome to disappear into a role like this one.

So DiCaprio did something most actors his age would never think to do. He spent a full week at a center for children with special needs in that same corner of Texas. Before that, by his own telling, he watched a single tape of a real child with a disability for three days straight without stopping.

He absorbed every small habit and mannerism he could find, then returned to Hallström with what has been described as his own checklist of physical details he wanted to build into the character. A teenager on essentially his third real film was out-preparing actors twice his age.

The strange little gesture Arnie repeats throughout the film — pressing his fingers against his eyes and dragging them slowly down toward his nose — was never written into the script. Nobody suggested it to him. He invented it himself and later called it a “brain wipe,” a way of letting Arnie drift off somewhere else so whatever came next could feel spontaneous instead of rehearsed.

Then there is the grasshopper. In a scene meant to be harmless, DiCaprio was instructed to put the insect’s head inside the mailbox and slam the door. He did exactly that.

The insect lost its head on camera, and that was the take the studio kept.

Animal welfare monitors were on set specifically to prevent that kind of thing, and they complained afterward. By then, the footage was already too honest, too unplanned to cut. It remains one of the first things longtime fans bring up, because it captures something true about the entire production: almost everything that feels most alive in this movie happened by accident, the way real life usually does.

Here is the twist almost nobody saw coming, and it is the kind of Hollywood what-if that stings decades later. DiCaprio was not the first actor cast in this role. He was not even the second.

Corey Feldman, already a star from “The Goonies” and “Stand by Me,” revealed years afterward on a podcast that he had originally been cast to play Arnie before Johnny Depp ever signed on to play Gilbert. According to Feldman, everything changed the moment Depp joined the production.

Feldman claims Depp told producers in no uncertain terms that he did not want to work with him, calling him a junkie behind his back. Feldman insists that was not true, that he had only recently gotten sober and was, in his own words, trying to help his friend River Phoenix at the time.

Whatever actually happened in those rooms, Feldman was out, DiCaprio was in, and Feldman has said he has never once brought himself to sit down and watch the finished film. He still describes himself as bitter about the whole thing all these years later.

It is strange to think that one of the most celebrated breakout performances of the 1990s almost went to someone else entirely — and that the film’s greatest champion, Depp, may have been the reason it did not.

Because make no mistake, once DiCaprio had the role, Depp did not go easy on him. Years later, accepting a career achievement award at a film festival, Depp stood in front of reporters and admitted it outright with no attempt to soften it. “I tortured him,” he said.

“I really did.”

He explained that DiCaprio was constantly talking about video games between takes, and Depp — nearly 30 at the time and working through what he later called a genuinely dark period in his own life — would tease him relentlessly, telling him he was not getting a single drag off his cigarette while he hid from his mother again.

Think about what that moment actually looked like from the outside. One of these two men was already a rising star quietly unraveling behind the scenes. The other was an excited kid who just wanted to talk about Nintendo.

And somehow out of that mismatch, out of a nearly 30-year-old actor being short-tempered with a teenager he found irritating, the two of them produced one of the most tender, believable brother relationships ever put on film.

Depp, to his credit, never tried to rewrite that history. In that same interview, he made a point of saying how much he respected DiCaprio’s work ethic, how seriously the kid had researched the role, how obvious it was even then that something special was happening in front of the camera.

It was not all tension, though. Somewhere in the middle of the shoot, Depp got bored between setups and pulled out a long-expired, genuinely rancid pickled egg. He dared DiCaprio to smell it for $500.

DiCaprio, 19 and broke by any Hollywood standard, took the bet without hesitating, inhaled the thing, and walked away $500 richer.

Picture that for a second. A future six-time Oscar nominee, a man who would go on to star in “Titanic” and “Inception” and “The Revenant,” hustling cash off a future Captain Jack Sparrow by sniffing spoiled food in the middle of nowhere, Texas.

There was a gentler side underneath all that teasing, too — one that almost never gets talked about, and it says more about who Depp really was on that set than the torture story does.

A large portion of Gilbert’s dialogue toward his mother in the film is deliberately, painfully cruel, comparing her to a whale, treating her weight as something shameful in front of the whole town. According to people close to the production, Depp genuinely hated delivering those lines.

After nearly every take that required him to say something cutting about her character, he would quietly pull Darlene Cates aside just to tell her how much he hated having to say those things about her. Cates, a first-time actress who had spent years struggling with her own body image and isolation, later said those small apologies meant more to her than almost anything scripted into the film.

It is easy to remember Depp as the guy who tormented his teenage co-star between takes. It is harder, and maybe more important, to remember that the same man was quietly making sure a vulnerable first-time actress never carried the weight of his character’s cruelty home with her.

A year after the film wrapped, Depp’s own chaos caught up with him in a way that had nothing to do with the movie — and yet somehow it has become permanently tangled up in the film’s folklore.

In September 1994, New York police were called to his room at the Mark Hotel and found the place completely destroyed, glass and furniture everywhere, with Depp sitting calmly in the middle of it smoking a cigarette. His explanation was that an armadillo had gotten loose in the closet and attacked him. Officers searched the room thoroughly.

No armadillo was ever found.

Depp was ordered to pay nearly $10,000 in damages, and although the charges were eventually dropped, the imaginary armadillo has followed him around in pop culture ever since — a strange, almost funny footnote to the same young man who just months earlier had been quietly apologizing to a co-star between takes for hurting her feelings on camera.

Through everything, it is Darlene Cates who ties this whole story together, and her arc might be the most emotional thread in the entire production. She had not left her own house in years when a screenwriter caught a glimpse of her on a daytime talk show and knew instantly he had found his Mama.

She had never acted a single day in her life before this film. Think about what that must have felt like — walking onto a professional film set for the very first time at an age when most people have already settled into who they are, surrounded by two young actors who were about to become two of the biggest names in the world, with absolutely no training to fall back on except her own life and her own pain.

Before filming ended, the teenage DiCaprio sat down and wrote her a letter by hand, admitting he was not the best with words on paper but telling her she was the most special person he had ever met, and that he would always remember her as the best acting mom he ever had.

It is a small gesture — a 19-year-old scribbling something sincere and a little awkward on a piece of paper. But Cates kept that letter for the rest of her life.

She never became a movie star. She took a handful of small television roles on “Picket Fences” and “Touched by an Angel” and then largely stepped away from acting altogether, choosing instead to speak to schools and community groups about body image and self-worth, using the one film she had ever made as a platform for something more personal than fame.

Years later, in 2012, she had lost roughly 240 pounds and was hoping to act again, telling a local newspaper that she could play mothers especially well since she did not have to dig very far to find one inside herself.

She passed away peacefully in her sleep in March 2017 at the age of 69. When the news broke, DiCaprio, by then an Academy Award winner and one of the most famous men on the planet, posted a public tribute using almost the exact same phrase he had written her by hand more than two decades earlier: the best acting mom he ever had.

Once in life, once in memory. The same sentence, 24 years apart, sent by a teenager who became a legend to a woman who never expected either the role or the friendship that came with it. It is rare for anything in Hollywood to close a loop that cleanly — a promise made quietly at 19 and kept publicly at 42.

And then there is the ending nobody expected, the one that took 22 years to actually arrive. This small, quiet Iowa story gave DiCaprio his very first Academy Award nomination, and he lost. The winner that year was Tommy Lee Jones for a much bigger, much louder box office hit called “The Fugitive.”

Most 19-year-olds would call a first nomination a career victory all on its own, and by every account DiCaprio did too, publicly at least. But it marked the beginning of a pattern that would follow him for more than two decades — nomination after nomination for “The Aviator,” for “Blood Diamond,” for “The Wolf of Wall Street,” each one ending the exact same way, until he finally won 22 years later for “The Revenant.”

All of it traces back to a mailbox, a grasshopper, and a small Texas set where a bored 20-something teased a 19-year-old about his taste in video games.

Meanwhile, Depp, the man who tortured him, went on to build Captain Jack Sparrow into one of the most recognizable characters in movie history. The two of them walked completely separate paths from that same starting point — one toward billion-dollar franchises, the other toward the kind of prestige and heartbreak that eventually earned him his statue.

Commercially, none of this looked like a success story at the time. Despite glowing reviews and a rare 90 percent approval score among critics, the film brought in just over $10 million at the domestic box office, barely enough to cover its budget, and it did not come anywhere near the year’s top 100 films.

It found its real audience later, slowly, through home video and late-night cable reruns — the kind of gradual word-of-mouth success that turns a box office disappointment into a film people now quietly consider one of the finest of its decade.

“What’s Eating Gilbert Grape” never had the box office numbers or the trophy case its performances deserved, but it gave the world its first real look at Leonardo DiCaprio. It gave Darlene Cates a second act she never expected. And it left behind a small trail of strange, human, deeply true stories that somehow feel just as honest as the movie itself.

A grasshopper that never should have lost its head. A confession of torture delivered decades later with real regret behind it. A $500 bet over a rotten egg.

A letter that echoed across 24 years.

Two young actors who had no idea, sitting in that small Texas town, that one of them was about to become a franchise icon and the other was about to spend two decades chasing the same golden statue — only to finally hold it in his hands and think back, however briefly, to where it all actually started.

Maybe that is why this film has aged the way it has. It was not built to be a blockbuster. And it never asked to be remembered.

It just quietly kept being true long after the box office receipts were forgotten, long after everyone involved became someone else entirely.