Sometimes the craziest theories turn out to be true. Welcome to WatchMojo, and today we’re counting down our picks for the Top 50 Conspiracy theories from the realms of history, politics, science, and more, that turned out to be at least somewhat real.

This is the true story behind "1917", the new war movie from Academy Award winning director Sam Mendes. Just because a film is fictional doesn’t mean that there isn’t a fascinating story behind it. “1917” is a World War I epic that centers on two British soldiers, Lance Corporals Blake and Schofield. The two are informed by a superior officer that a British battalion is walking into a fatal trap. The Germans have retreated to the Hindenburg Line in the midst of Operation Alberich, waiting to ambush the enemy. If the attack isn’t called off, the British army will lose 1,600 brothers in arms, one of which is Blake’s actual brother. Join WatchMojo as we break down the true story behind "1917".

These fan theories are truly crazy and, crazily, true. For this list, we’re examining a mix of theories about video games, cartoons, anime, and more, to break down those exciting instances when fans were right on the money.

Sometimes the truth is staring us right in the face. Welcome to WatchMojo, and today we’re counting down our picks for the Top 50 Rumors that Turned out to be True.

These conspiracy theories were later proven to be 100% true! Welcome to WatchMojo, and today we’re looking at true conspiracies that emanated from the '90s, as well as those that were confirmed to be accurate during the decade.

Most conspiracy theories are false, but these turned out to be true! Welcome to WatchMojo, and today we’re counting down our picks for wild conspiracy theories from around the world that, when the truth came out, were proven not to be theories after all, but history.

These medical conspiracies turned out to be true! For this list, we’ll be looking at famous conspiracies involving medical science that have a dash of realism about them.

When it comes to this topic, expect the unexpected. For this list, we’ll be looking at modern conspiracy theories with a scientific twist that wound up being true - though they may not be what you think.

We all want these "Harry Potter" fan theories to be true. For this list, we’ll be looking at the most exciting and compelling fan theories about the “Harry Potter” franchise.

Make room in your queue because these are the true crime documentaries to watch in 2021.

When every scene is a top moment, it’s hard to pick just ten. Welcome to WatchMojo, and today we’ll be counting down our picks for the Top 10 True Detective Moments. For this list, we’ll be looking at any moment from both seasons of “True Detective” that leave us breathless, get us tightly-wound in anticipation, or leave us questioning our own identity or outlook on the world. Warning: spoilers will follow.

Think you know a lot about SPACE? Learn how much is true and how much is just storytelling. Take our TRUE or FALSE challenge!

We deal with the weather every single day. Sometimes it's cold and sometimes it's hot, but no matter what, it can influence how we approach the day. Test your knowledge with this True or False Quiz! What are some other myths that you've heard about the weather? Tell us in the comments below! Rain or shine, you can take this quiz anytime!

It’s not surprising that this truly inventive, long-running series got more than a few things right. Welcome to WatchMojo.com and today we’re counting down the top 10 Simpsons jokes that came true. For this list, we’re focusing on those real world events that were not easily predictable and yet they actually occurred after a similar thing happened on an episode of “The Simpsons.” However, we’re excluding those moments or events that purposefully mirrored the show. Oh, and a spoiler alert is now in effect.

These unsolved mysteries continue to baffle the world. For this list, we’ll be looking at unanswered questions throughout the fields of science, history, true crime, and pop culture that continue to captivate and fascinate us.