Not too many Potterheads know that the adaptation of the first JK Rowling book on the beloved wizard, Harry Potter and the Philosopher’s Stone, was initially being directed by Steven Spielberg. The legendary filmmaker even developed a second draft of the movie, which would not only turn out to be a global blockbuster, but also kick off a franchise worth over $30 billion.

After Warner Bros purchased the rights to adapt the first four Harry Potter books after paying Rowling $1 million, it got Spielberg onboard to helm the first instalment. The filmmaker was fresh off the success of his 1998 period war drama Saving Private Ryan, and was best known for helming blockbuster fantasy movies like Close Encounters of the Third Kind (1977), E.T. the Extra-Terrestrial (1981), and Jurassic Park (1993).

Spielberg even worked in tandem with screenwriter Steven Kloves to develop the second draft of Harry Potter and the Philosopher’s Stone. He also brought on board several principal cast members, including late actors Richard Harris, Maggie Smith, and Robbie Coltrane. They played Hogwarts headmaster Albus Dumbledore, professor Minerva McGonagall, and caretaker Rubius Hagrid respectively.

Spielberg, who claimed he knew Harris for years, suggested his name for Harry Potter and the Philosopher’s Stone. While Harris played Dumbledore in the first two Harry Potter movies — The Philosopher’s Stone and The Chamber of Secrets (2002) — he passed away before the production could start on the third instalment, the Prisoner of Azkaban (2004), where Michael Gambon replaced him.

Spielberg had directed Maggie Smith in his 1991 adventure fantasy Hook, an adaptation of Peter Pan, in which she essayed the role of Wendy Darling. The filmmaker suggested her name for the role of Dumbledore’s close aide and Transfiguration professor Minerva McGonagall, which she reprised in all the subsequent seven instalments of the Harry Potter franchise. Similarly, Spielberg also suggested Robbie Coltrane’s name to play Hagrid, Dumbledore’s loyal associate and Harry’s guardian in the franchise.

Soon after developing the second draft of Harry Potter and the Philosopher’s Stone and suggesting some key cast members, Spielberg left the project. Multiple reasons have floated by for years explaining his exit. One of them include creative differences with Warner Bros, as Spielberg reportedly wanted Harry Potter to be an animated film instead, produced by DreamWorks Animation.

Though Spielberg wished the makers luck and said he looked forward to watching Harry Potter and the Philosopher’s Stone with his family, he opened up on his controversial decision years later in 2014, after the franchise had completed its due course. “I purposely didn’t do the Harry Potter movie because for me, that was shooting ducks in a barrel. It’s just a slam dunk. It’s just like withdrawing a billion dollars and putting it into your personal bank accounts. There’s no challenge,” he told PageSix.

Another rumour regarding Spielberg’s exit suggested creative differences with Rowling. However, the Harry Potter author cleared the air on her website years later. “I don’t choose directors for the Harry Potter films,” she wrote, adding, “Steven Spielberg did consider directing Philosopher’s Stone, but decided against it; anyone who thinks I could (or would) have ‘veto-ed’ him needs their Quick-Quotes Quill serviced.”

Three years ago, Spielberg finally opened up on his Harry Potter exit. “I chose to turn down the first Harry Potter to basically spend that next year and a half with my family, my young kids growing up. So I’d sacrificed a great franchise, which today looking back I’m very happy to have done, to be with my family,” he told Indian filmmaker SS Rajamouli during a chat.

Spielberg added that he’d already established himself as a filmmaker, so didn’t need the opportunity to direct Harry Potter as much. Additionally, most of the film’s shooting took place in London, which would have kept him away from his wife Kate Capshaw and their young kids. He opted to direct the sci-fi drama A.I. Artificial Intelligence (2001) instead, most of its filming took place closer home in Los Angeles.

After Spielberg left the project, several filmmakers were approached to helm Harry Potter and the Philosopher’s Stone. These included Monty Python and the Holy Grail (1975) director Terry Gilliam, on the recommendation of Rowling. But Warner Bros leaned more towards other names like M Night Shyamalan, who turned down the offer since he was busy with directing his 2002 sci-fi horror thriller Signs.

Wolfgang Petersen, who later directed action epic Troy (2004), was also approached, but he backed out. So did Rob Reiner, best known for helming the 1989 seminal romantic comedy When Harry Met Sally…, and 1992 legal drama A Few Good Men. Other names in the running included Romeo + Juliet (1996) director Baz Luhrmann, Seven (1995) and Fight Club (1999) helmer David Fincher, Meatballs (1979) and Ghostbusters (1984) director Ivan Reitman, A Beautiful Mind (2001) director Ron Howard, and Mike Newell, who would eventually helm the fourth instalment, Harry Potter and the Goblet of Fire, in 2005.

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But Warner Bros zeroed in on Chris Columbus, best known for directing seminal family-friendly dramedies like Home Alone (1990) and Mrs. Doubtfire (1994). Columbus was very keen too, after his daughter had persuaded him to read the two Harry Potter books that had already released by then. Interestingly, Columbus, who would go on to helm the first two films, was a protégé of Spielberg. The third instalment would be directed by Mexican filmmaker Alfanso Cuaron.