If you're looking for the best sci fi mystery books to buy online, look no further than this compiled list. We've gathered together a selection of books that are sure to please, whether you're looking.

So what are you waiting for? Start browsing and find your next great read today!

Our Favorite sci fi mystery books:

SaleBestseller No. 1

The Atlantis Gene: A Thriller (The Origin Mystery, Book 1)

• Used Book in Good Condition
• Riddle, A.G. (Author)
• English (Publication Language)
• 640 Pages - 04/05/2013 (Publication Date) - Modern Mythology (Publisher)

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SaleBestseller No. 2

Elsewhere

• Koontz, Dean (Author)
• English (Publication Language)
• 367 Pages - 03/23/2021 (Publication Date) - Thomas & Mercer (Publisher)

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SaleBestseller No. 3

Lost In Time

• Hardcover Book
• Riddle, A G (Author)
• English (Publication Language)
• 416 Pages - 09/01/2022 (Publication Date) - Head of Zeus (Publisher)

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Bestseller No. 4

The Unknown (The Unknown Series)

• Lynne, J.W. (Author)
• English (Publication Language)
• 344 Pages - 08/02/2019 (Publication Date) - Independently published (Publisher)

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Bestseller No. 5

Sci-Fi & Mystery (Music for Books - Vol. 2) (Präsentiert Von Phantastik-Couch.De)

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Bestseller No. 6

The Fossil: Science Fiction Thriller (Secrets Of Mars Book 1)

• Amazon Kindle Edition
• Calvert, Joshua T. (Author)
• English (Publication Language)
• 454 Pages - 03/15/2021 (Publication Date)

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Bestseller No. 7

Hunt A Killer Supernova - Comic Book Mystery Game - for Fans of Sci-Fi & Puzzle Solving - Great for Game Night with Friends & Family or Date Night

• Game with Different Endings: It's up to you to uncover the truth behind the Super Nova's fate; your choices will determine the outcome, offering two different endings
• Engaging Gameplay Experience: This detective game offers up to 6 hours of fun as you sort through superhero merchandise and comic book lore
• Explore Evidence & Symbols: This game blends physical evidence and online gameplay for an immersive experience; examine evidence and decode symbols
• Interactive Sci-Fi Mystery Game: Unleash your inner detective and solve puzzles and examine evidence to uncover a mystery set in a comic book world
• Immersive Mystery & Crime Games: Change up game night with Hunt A Killer games; story-driven card, puzzle, and board games that will challenge your problem-solving skills

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Bestseller No. 8

A Murder in Time: A Novel (Kendra Donovan Mystery Book 1)

• Amazon Kindle Edition
• McElwain, Julie (Author)
• English (Publication Language)
• 513 Pages - 04/15/2016 (Publication Date) - Pegasus Crime (Publisher)

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Bestseller No. 9

THE CALYPSO MYSTERY: A SciFi Adventure (The Ancient Secrets Book 5)

• Amazon Kindle Edition
• Falk, T.S. (Author)
• English (Publication Language)
• 191 Pages - 05/15/2023 (Publication Date)

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Bestseller No. 10

Death Warrant

• Johnston, Bryan (Author)
• English (Publication Language)
• 352 Pages - 05/09/2023 (Publication Date) - CamCat Publishing (Publisher)

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Bestseller No. 11

Through Stranger Eyes: a science fiction cyberpunk mystery thriller (Matriarchs - Silicon Gods Book 1)

• Amazon Kindle Edition
• Sarantopoulos, Chris (Author)
• English (Publication Language)
• 495 Pages - 10/09/2019 (Publication Date)

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Bestseller No. 12

The Girl with the Silver Eyes

• Roberts, Willo Davis (Author)
• English (Publication Language)
• 192 Pages - 03/22/2011 (Publication Date) - Aladdin (Publisher)

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SaleBestseller No. 13

Watchers

• Koontz, Dean (Author)
• English (Publication Language)
• 624 Pages - 01/28/2003 (Publication Date) - Berkley (Publisher)

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Bestseller No. 14

Murder on the Intergalactic Railway: A Ritchie and Fitz Sci-Fi Murder Mystery (The Ritchie and Fitz Sci-Fi Murder Mystery Series Book 1)

• Amazon Kindle Edition
• MacLeod, Kate (Author)
• English (Publication Language)
• 294 Pages - 01/14/2020 (Publication Date) - Ratatoskr Press (Publisher)

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Bestseller No. 15

The Secret Lake: A children's mystery adventure

• Inglis, Karen (Author)
• English (Publication Language)
• 122 Pages - 08/04/2011 (Publication Date) - Well Said Press (Publisher)

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Bestseller No. 16

Aeon Rising: The Apocalypse Begins

• Mather, Matthew (Author)
• English (Publication Language)
• 340 Pages - 05/25/2022 (Publication Date) - Babel Books (Publisher)

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Bestseller No. 17

The Counterfeit Heinlein (Gerald Knave Science Fiction Novels)

• Used Book in Good Condition
• Janifer, Laurence M. (Author)
• English (Publication Language)
• 180 Pages - 03/01/2021 (Publication Date) - Wildside Press (Publisher)

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Bestseller No. 18

The Genre Writer's Book of Writing Prompts & Story Ideas II: 540 MORE Creative Writing Prompts in the Genres of Fantasy, Sci-Fi, Mystery & Thriller, Horror ... Genre Writer's Creativity Collection 2)

• Amazon Kindle Edition
• Writing Collective, The Mayday (Author)
• English (Publication Language)
• 144 Pages - 05/20/2023 (Publication Date)

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Bestseller No. 19

True Crime Network

• Free true crime shows, Free true crime podcasts
• English (Publication Language)

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SaleBestseller No. 20

Sci-Fi 4-Movie Series (Oblivion / Lucy / R.I.P.D. / Seventh Son) [DVD]

• Tom Cruise, Scarlett Johansson, Jeff Bridges (Actors)
• Luc Besson (Director) - Luc Besson (Writer) - Virginie Besson-Silla (Producer)
• French (Subtitle)
• Audience Rating: NR (Not Rated)

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When it comes to buying sci fi mystery books, there are a few things you need to keep in mind in order to get the best possible deal. The first thing you need to do is set a budget for yourself. Decide how much money you are willing to spend on a book before you start shopping. This will help you narrow down your choices and make sure you don't overspend. Keep in mind that many stores offer discounts for purchasing multiple books at once. So, if you're looking to buy more than one book, it's definitely worth checking the store’s discount policy.

Another option to get the best deal on sci fi mystery books is to wait for sales. Major retailers will often have sales on popular titles a few times per year. By waiting for a sale, you can usually get a book at a significantly lower price than the regular retail price.

Finally, it is important to think about where you will be reading the book. If you plan on reading the book primarily at home, then it does not make sense to spend a lot of money on a hardcover edition. However, if you plan on traveling with the book or taking it to the beach, then spending a bit more money on a durable edition makes sense.

Here are a few tips to help you buy the best sci fi mystery books:

1. Look for well-reviewed sci fi mystery books. Checking out what other readers have said about a book can give you a good idea of whether it's worth your time. You can find reviews online or in newspapers and magazines.
2. Consider the author's reputation. If you're familiar with an author's other work and liked it, there's a good chance you'll enjoy their new book.
3. Think about what you want to get out of the book. If you're looking for a light read, something funny, or a book that will make you think, you can narrow down your options by looking for books that fit those descriptions.
4. Check the price. Sometimes, you can find great deals on new sci fi mystery books. But be careful of cheaply made books, they might not be worth your money.
5. Take a look at the return policy. Some online stores will not accept returns on certain items, so it's important to know what the policy is before buying anything.
6. Ask for recommendations. Talk to your friends, family, and fellow book lovers to see if they have any suggestions.

By doing all of these things, you can be sure that you're getting the best possible deal on sci fi mystery books when you shop online.