One of the most common genres of science fiction deals with alien conspiracies — most often, conspiracies that are kept secret by the US government. In this genre, it's never quite certain who's telling the truth, why secrets are kept from mainstream people, or what the end game of the alien visitors really is.
You may have seen this genre in action when you watched X-Files as a kid, or if you've taken a look at Stranger Things on Netflix. You also might be aware of the genre thanks to hit movies like Men in Black. What you may not be aware of is how many awesome alien conspiracy theory books are out there.
If you love shadow governments, alien takeovers and clandestine affairs, these books are definitely out of this world.
The Doomsday Conspiracy by Sidney Sheldon
Sidney Sheldon's The Doomsday Conspiracy is one of the best alien conspiracy theory books for people who want something that seems so realistic, it almost feels plausible. When a "weather balloon" crashes into the Swiss Alps, NSA agent Robert Bellamy is put in charge of tracking down witnesses.
Unfortunately, the mission goes awry, and Bellamy uncovers a massive conspiracy that has sky-high implications. It's sci-fi that builds on a number of classic conspiracy theories, and makes them all juicy enough to want to sink your teeth into.
Mostly Void, Partially Stars: Welcome to Night Vale Episodes, Volume 1 by Joseph Fink
Welcome to Night Vale is a podcast that features alien conspiracy theories, arcane gods, a shadow government, and just about every other crazy sci-fi trope out there. More impressively, it's one of the funniest (and creepiest) science fiction franchises out there.
Between the glowing lights in Radon Canyon and the literal five-headed, dragon, mayoral candidate, you'll fall in love with this strange little town. That's why the podcast's first volume of transcripts deserves to be on every list of alien conspiracy science fiction books to read.
The Myth and Mystery of UFOs by Thomas E. Bullard
If you love conspiracy theories, and aren't too much into fiction, you might want to read some of the better books that point out the high strangeness going on in the world today. There does seem to be something going on, even though no one seems to want to acknowledge it in the government.
Thomas E. Bullard's The Myth and Mystery of UFOs is all about asking why so many alien conspiracy science fiction books seem so plausible — and why so many reports continue to get quashed.
This book isn't so much science fiction as it is thoroughly researched sightings of aliens throughout the world, and a question of why no one wants to discuss it. Conspiracy fact? Who knows?
Hunt for the Skinwalker: Science Confronts the Unexplained at a Remote Ranch in Utah by George Knapp
George Knapp has a strong following among conspiracy theorists, which is why this science fiction-not-fiction book has become so popular. Hunt for the Skinwalker details the true events of people who spent time on a ranch known for heavy UFO activity.
Along with chilling stories involving creatures from other worlds and potential portals to other dimensions, Hunt for the Skinwalker delves into a number of events that make you wonder how much the US government really knows about UFOs — and why they would want to keep the public unaware.
Though this technically doesn't fit among alien conspiracy science fiction books because it's actually factual, the ample speculation makes it sci-fi enough for our tastes. Ergo, you should read this since it's one of the best conspiracy theory books ever made.
The Secret History of Twin Peaks by Mark Frost
Twin Peaks fans, unite! This is one of the most popular alien conspiracy science fiction books associated with a TV show — and it's all presented in the format of an FBI dossier.
Mark Frost's awesome book lets you get a peek into the full scope of strange occurrences involving your favorite characters on the hit Showtime series.
Babel-17 by Samuel R. Delany
Samuel R. Delany is a master of the written word, and Babel 17 is proof of it. This extremely unusual book is all about the power of language, interwoven with strange alien invasion stories that make you realize how little we often know when making life-changing decisions.
Covert assassinations, spaceship sabotage, and puzzling messages are all that Rydra Wong has as clues when it comes to the strange war humanity is fighting against the Invaders. The more she uncovers about the strange alien language, the more she realizes that she may be fighting on the wrong side of the conflict...
The X-Files: Goblins by Charles Grant
Believe it or not, one of the best alien conspiracy science fiction books you can buy is based on the granddaddy of all alien conspiracy TV shows. The X-Files: Goblins follows Mulder and Scully as they search for "X," an unseen creature that is killing people with incredible force.
Considering how many alien invasion stories X-Files has helped originate, reading this classic sci-fi book will undoubtedly awaken the true believer in you — and give you an awesome read that'll leave you on the edge of your seat.
Invasion by Sean Platt
This highly dystopian novel has a million and one awesome ways that conspiracy theories come alive — and have the lid blown right off them. Strange objects from Jupiter's orbit just sent humanity into a panic, with many people beginning to speculate on alien invasion stories and begging for government help.
With the end of the world perilously close, it's becoming clear that the government was hiding a lot more than anyone expected. The truth is out there, and in Invasion, it's only the beginning...
Area 51 by Bob Mayer
New York Times bestselling author Bob Mayer is one of the biggest names to create a series of alien conspiracy science fiction books, and the first of the series is Area 51. This book features the infamous crash at Roswell, government scientists debating the ethics of keeping aliens secret, and people debating whether they should take an alien mothership for a ride in space.
It's got many classic tropes of the genre, but all of them are written incredibly well. The end result is a gripping, intelligent book that makes you wonder how long alien conspiracies have really been going on. If you love seeing how many conspiracy theories inspired fictional books, you'll enjoy this read.
Invasion of the Body Snatchers by Jack Finney
Jack Finney's classic basically defined what all alien conspiracy science fiction books should try to achieve. It's an alien race that's got the conspiracy going on as they steal other peoples' bodies to further their invasion agenda.
It's up to one single person who's recognizing that something's amiss to save the human race. Invasion of the Body Snatchers is a classic that's been remade into movies, mentioned on TV, and become a sci-fi trope in its own right. Needless to say, it's a must-read for a reason.