Known for his incredible deductive reasoning, an astute mind, and level-headedness, the classic literary character of Sherlock Holmes has become quite famous since his first appearance. The product of the genius British writer Sir Arthur Conan Doyle, he became known as one of the greatest deductive minds of literature and one of the most famous detectives in the world. Along with his noted friend and companion, Dr. Watson, Holmes solved some of the most intriguing crimes of Victorian England.

Throughout the years, the character has been brought to life on both the big screen and television. Each portrayal by various actors over the years still maintain the core of the character. With the possibility of director Guy Ritchie helming his own version of the detective, audiences knew the end product would be something extraordinary.

With an all-star cast including Robert Downey Jr., Jude Law, and Rachel McAdams, the cast managed to breathe new life into the character, making him more action-oriented as well as still being a brilliant mind. The movie Sherlock Holmes hit theaters in 2009 and soon became a fan favorite. The film was so well-received that Warner Bros. approved the sequel to be made immediately. Sherlock Holmes: A Game of Shadows premiered just two years after the original. There is even a third movie in the works, with a highly anticipated release date of 2020.

Although the end product was indeed worth the time, these crazy behind-the-scene moments will certainly expand your knowledge of the Sherlock Holmes world.

Here are 20 Crazy Details Behind The Making Of Sherlock Holmes.

Robert Downey Jr. Was Considered Too Old To Play Holmes

Many stars, especially actors with extensive careers, eventually hit a wall where their age becomes a deciding factor for movie roles. Whether these Hollywood professionals aren’t old enough or too old, they tend to be overlooked for roles regardless of their star power and talent.

Downey, for example, made a tremendous comeback in his career after several hiccups in his personal life. Since his star power skyrocketed after Iron Man, his status as an elite actor in Hollywood returned very quickly. However, even Downey’s star power almost wasn’t enough to be cast in Sherlock Holmes.

Ritchie, focused on creating a younger version of the detective, almost didn’t consider Downey Jr. because he was too old. Thankfully, his talents proved too great.

Rachel McAdams Was Considered Too Young To Play Irene Adler

As we discussed earlier, the role of Sherlock Holmes almost become a movie focused on a much young detective. Similar to the developing journey of Batman in the rebooted series, the younger Holmes would also have been on a journey of self-discovery and acceptance. However, with accepting RDJ as the lead actor, the story retained a somewhat younger detective, but a much more experienced one.

In a twist of fate, actress Rachel McAdams faced the opposite problem when it came to considering her for the role of Irene.

Despite her body of work, she was considered too young for the role. Thankfully, Downey stepped in and vouched for her portrayal of the character, insisting she would not look too young to be his character’s love interest.

The Original Screenplay Was Blacklisted

Screenwriters and producers work together to try to find a home for their projects. Usually, potential scripts are ed around from studio to studio until it falls into the lap of the right people. Even if a studio es on a project, that doesn't necessarily mean it's not good.

The Black List was created as a secret way to promote unproduced scripts that were favorites among industry insiders.

The unproduced script for Sherlock Holmes resided proudly on this list in 2008, alongside other future critical or commercial hits like Foxcatcher, Up in the Air, and Inglourious Basterds, proving its potential even back then.

Downey Dropped Major Weight For The Role

Taking on the role of Tony Stark in the Iron Man franchise gave Downey's career the comeback he desperately needed. He embodied the character entirely and added his own touches to his onscreen portrayal. Can you imagine anyone else filling his shows as the quick-witted and slightly irresponsible billionaire genius? Yeah, we can’t either.

Not only did Downey fully capture the character’s personality and muscled physique. However, the role of Sherlock Holmes called for a much slimmer body type. To accommodate the requirement, the Iron Man actor found himself dropping the muscle he put on for the Marvel movie and slimming down for the role of Holmes.

Considering the filming took place in between Iron Man movies, he definitely had his work cut out for him to bulk right back up again.

Law Wanted Watson To Be Tougher

The character of Dr. Watson served as the calmer and collected force in Sherlock Holmes’ life. Serving as his partner and friend, he could be found at the detective’s side as he solved the various mysteries that had to face.

Actor Jude Law felt there needed to be a change in the public’s view of the character, though. Sherlock Holmes gave Law the opportunity to portrayal Watson with a more interesting perspective.

Rather than the dim-witted, goofy sidekick of other Holmes adaptations, Law's is level-headed and tough.

As reported by MTV, Downey stated their Watson was “much more right from the book. He's had a military career, a decorated soldier, a serious doctor, a bit of a womanizer, a bit of a gambler. And I think that makes him a much more interesting foil for Holmes."

Downey's Real-Life Quirkiness Made Him The Best Choice

There is no question that Robert Downey Jr. continues to prove to be quite a character. From his quick wit to unique quirks, he has become a standout star in Hollywood. In fact, thanks to his ability to “stand out in a crowd,” he managed to secure the role of Sherlock Holmes.

The actor even commented in an interview with the BBC that “Holmes is such a weirdo.” Granted, the statement may seem like an offhanded comment against Holmes when, in fact, it speaks volumes about Downey himself.

Behind the quirks and strange behaviors, his wife, and producer on Sherlock Holmes, Susan Downey, immediately recognized her husband as being quite similar to the character. He recalled that she “said that when you read the description of the guy — quirky and kind of nuts — it could be a description of me."

The cast Did Most Of Their Own Stunts

Launching a new version of Sherlock Holmes meant significant changes for many of the characters and storyline. Although the essence of the characters remained the same, they were redone for a more stylish and action-packed portrayal.

With noted director Guy Ritchie helming Sherlock Holmes, audiences had come to expect the quick-talking, non-stop action sequences they had grown to love in his previous films such as Lock, Stock, and Two Smoking Barrels and Snatch.

With the challenge of bringing more action to the franchise, the lead stars also dedicated themselves to creating those action-packed scenes without help. Downey, Law, and McAdams performed most of their stunts themselves.

Ritchie and Downey Dropped Other Projects For The Sequel

After Sherlock Holmes did well at the box offices, with most critics favoring the film, it’s no wonder the studio wanted to continue its momentum. Not long after the initial film was released, the producers moved on to developing a sequel.

However, due to Warner Bros. deciding to fast-track the next movie, both Ritchie and RDJ had to make a tough decision about their career. Ritchie had to drop out of the highly anticipated DC Comics film Lobo.

For Downey, his commitment to the sequel meant that he had to drop out of Jon Favreau’s Cowboys & Aliens.

Initially set to play the role of Zeke Jackson, the part was recast with James Bond actor Daniel Craig taking his place. 

The new Bond girls?

The mystery and intrigue of the James Bond franchise have captivated audiences for decades. With the suave and debonair Bond leading each movie, fans can’t get enough of the dashing lead and his womanizing ways.

Along with looking forward to the new Bond actor, fans also look forward to the new Bond girl, a love interest or enemy who was quickly disposed of after each movie. In the next movie, a new woman was introduced to captivate the secret agent. In the same vein, Sherlock Holmes producer Joel Silver hoped to include a “Holmes” girl in each film.

In an interview reported by Iamrogue, Silver stated, “We always felt that Bond was definitely a pattern for us, and the notion of every Bond movie having a new Bond girl or girls.” However, this new practice would negatively affect lead actress Rachel McAdams in the end.

The Sequel Was Supposed To Be A StandAlone Movie

When Sherlock Holmes debuted in December 2009, old and new fans of the character witnessed a slicker, more action-packed detective. From the witty dialogue to the heart-stopping action sequences, Downey and Ritchie redefined the British detective in one of the most entertaining movies of 2009.

To continue the success of the franchise, Warner Bros. quickly greenlit the sequel - well, sort of a sequel. Originally called Sherlock Holmes 2, the movie was supposed to exist as a standalone film. Audiences weren't required to have seen the first movie to enjoy the new movie.

Though the action does take place after the events of the first film, new fans can take in the plot of the second film on its own.