The Time Shifter follows a young protagonist who discovers a mysterious device that allows him to jump between moments in time. Set in a contemporary world, the story blends adventure with the wonder of scientific possibility, inviting readers to explore the consequences of altering history. Written by John Peel, the book balances humor and suspense while keeping the narrative accessible to middle‑grade readers. With 119 pages, the novel encourages imagination and curiosity about the past, present, and future, making it a fitting addition to any young adult library collection.