Peter Lerangis

Peter Lerangis is an American author of numerous children's and young adult series who became one of the core writers behind Rick Riordan's 39 Clues franchise, a multimedia series combining novels, collectible cards, and an online game following a family of siblings racing to uncover clues about their powerful ancestors. Riordan originated the series concept and wrote the first book before handing off subsequent installments to a rotating team of authors, including Lerangis, who wrote multiple entries across different story arcs within the franchise. Before his work on 39 Clues, Lerangis had an extensive independent career writing for young readers across multiple genres and series, giving him the versatility needed to maintain consistency within a large collaborative franchise with a complex overarching mystery. His contributions helped sustain the series' fast-paced, globe-trotting structure across its many volumes, a format designed to keep young readers engaged across an unusually long multi-author series arc. Lerangis has continued to write extensively for young readers, and his work within the 39 Clues franchise remains among the most visible entries in his broad and prolific children's fiction career.