Interest LevelReading LevelReading A-ZATOSWord Count
Grades 3 - 7Grade 6n/a5.867071
New York Times bestselling series

Tensions are running high when multi-billionaire Lars Sjoburg is poisoned and demands to go home and everyone is looking to Dash Gibson to solve the case in this third and final book in the New York Times bestselling Moon Base Alpha series.

Moon Base Alpha was supposed to be an exciting place to live, but Dash didn’t expect for it to be this exciting. After solving a murder and rescuing the moon base commander, he just wants to have a calm, quiet thirteenth birthday. But of course multi-billionaire and total pain Lars Sjoburg ruins it—by being poisoned.

Now there’s a murderer loose on Moon Base Alpha again. And Dash is charged with finding out who it could have been.

Everyone has a motive, and time is running out.
Hardcover, 336 pages
Published on April 24, 2018 by Simon & Schuster Books for Young Readers
ISBN-10: 148147779X
ISBN-13: 9781481477796
6 Book Reviews
Add a Rating
  • 13iamgroot
    13iamgrootTuesday, September 3, 2019 at 4:13 pm33 stars
    Dashiell has to solve yet another mystery in this third book of the Moon Base Alpha series by Stuart Gibbs. Though I liked his other series Spy School a little better than this one, it was still pretty good. In this book, someone gets poisoned! How many ways will people almost die in one tiny moon base? Dash gets called on by the moon base commander to solve the mystery, since he figured out the last two. He just wants to relax on the moon and try to live as normal as a life as he can. In the end, it turns out to be the person everyone least expected. And also, there was another crisis happening during all of that, but I won't spoil too much!
    • sylvie55555
      sylvie55555Friday, July 19, 2019 at 4:50 pm55 stars
      In this 3rd and last book in the moon base alpha series, the rich billionaire who is paying to stay at moon base alpha gets food poisoning. Who did this? And mean while all the grown ups are starting to act weird? What's happening? Read the book to find out!
      • jmanWednesday, February 27, 2019 at 8:17 pm
        this is an awesome book. The best one in the series
        • tancred_torsson
          tancred_torssonMonday, September 24, 2018 at 6:16 pm55 stars
          Super suspenseful! And, the Sjoburgs are SO annoying. And just really rude. I love this book! I laughed out loud during some of the parts.
          • jay846
            jay846Thursday, January 18, 2018 at 12:46 pm55 stars
            i really want it cause i never read it
            • unibrowboi
              unibrowboiMonday, August 13, 2018 at 6:25 pm55 stars
              well you should read it