“An eventful and ultimately tender time-travel tale.”

-Kirkus Reviews

While taking a math test on his twelfth birthday, Ace accidentally discovers he has the ability to go back in time. 

He doesn’t believe it at first. He thinks he imagined it or fell asleep for a minute and dreamed it. I mean, how could he go back in time?

Along with his best friend Alexis, Ace practices his new ability while they research more about it, and about the strange place he goes while in between times.

Ace Adler and the Pendulum of Doom is the first book in a new series by author John H. Matthews. His first middle grade book, Runt, came out in 2022. 

Watch for the next Ace Adler adventure!