The 13th Reality Series is a young adult fantasy/science fiction series written by James Dashner, the bestselling author of The Maze Runner series. Consisting of four books, the series follows the adventures of a young boy named Atticus Higginbottom, also known as Tick.

In the first book, "The Journal of Curious Letters," Tick receives a mysterious letter inviting him to take part in a dangerous quest to save reality itself. As Tick delves deeper into the mystery, he discovers a secret parallel universe called the Realities, controlled by a villain named Mistress Jane. Tick soon realizes that his unique abilities and intelligence make him the key to stopping Mistress Jane's nefarious plans.

Throughout the series, Tick teams up with his friends and mentors, including his ardent supporter and fellow Reality Agent Isabel, the enigmatic Master George, and the charming Sofia. Together, they navigate a series of alternate realities, solving puzzles, facing challenges, and unraveling the secrets of the Realities.

As the series progresses, the stakes become higher, and Tick's understanding of the 13th reality deepens. He fights against powerful adversaries, discovers his own hidden gifts, and learns the true nature of his mission. Along the way, he grapples with personal growth, friendship, and the ethical dilemmas of manipulating reality.

The 13th Reality Series combines elements of science fiction, fantasy, adventure, and puzzle-solving. Dashner creates a world filled with imaginative concepts and unique settings, captivating readers with his fast-paced storytelling and intricate plot twists. The series explores complex themes such as the nature of reality, the power of choice, and the consequences of actions, making it an engaging and thought-provoking read for young adult and fantasy enthusiasts.