Featured in "Best Middle Grade Fantasy Books" - Reedsy Discovery "Fun & Fast Paced, This is Middle Grade Fantasy at its Best!" - ★★★★★ — Amazon Reviewer "If you know any middle grade readers who enjoy science fiction/fantasy with a mix of action, danger, and humor - recommend this book to them, or just go ahead and give them a copy." — The Fairview Review “With elements of adventure, exploration, other worlds, and fantastical science, Nemesis and the Vault of Lost Time is an exciting middle-grade novel with plenty of suspense… Behind the adventure are important messages about believing in oneself and finding inner strength.” — The Children's Book Review Thirteen-year-old Max is a daydreamer. It gets him into trouble at school, but his restless curiosity really turns problematic when he runs into a mysterious professor at his uncle's bookstore. The old man informs Max that time is being sucked out of the planet by invisible bandits, stolen from unsuspecting people one breath and one sneeze at a time, and is being stored in a central vault. Once full, the vault will fuel a hungry horde of invaders looking to cross into earth, and cross out all its people. What's more, the professor claims he knew Max's missing scientist father. With the help of his best friends, Derek and Samantha, Max must harness his compulsive curiosity and find passage to this place called Nemesis to stop the sticky-fingered time thieves and halt their planned invasion. But when the professor goes missing and the clock starts ticking, Max discovers far more than he imagined. Just how much Max is willing to sacrifice hinges on the realization of just who or what he is beyond the bounds of time. "...an exciting, action-packed adventure and I recommend you give it a shot." ★★★★★ Mark Buxton - Young Adult Books Central “P.J. Davis weaves a fun middle grade portal fantasy romp through mysterious worlds with lots of action..." ★★★★ Shaun Stevenson - Reedsy Book Review IPPY Bronze Medal in Best Juvenile/Young Adult Fiction 2025 Finalist in the 19th Annual National Indie Excellence Awards 2025 Moonbeam Children's Book Awards Silver Medal in Pre-Teen Fiction 2024 Shelf Unbound Best Indie Book Competition Notable 100 Book 2024 "The plot of Nemesis and The Vault of Lost Time is a tapestry of surprises characterized by its unforeseen twists and turns. It's this element of suspense that grips the readers, while the vivid descriptions create immersive visual experiences. Beyond its adventurous core, this mystery novel delves into themes of friendship and the nuanced dynamics of father-son relationships, offering a multi-layered reading experience." "A swiftly paced and wildly delightful fantasy romp."~Kirkus Reviews "P.J. Davis weaves a fun middle grade portal fantasy romp through mysterious worlds with lots of action, adventure, and a hint of whimsy, along the way creating one of my new favorite fantasy sidekicks ever in Humphries!"~Shaun