Riley Sager, writing under the pen name RileySager, is a prolific American thriller author and native of Pennsylvania. Known for his twist-driven, standalone thrillers, Sager’s writing style often centers on suspenseful plots with unreliable narrators and a focus on psychological tension. His books are typically fast-paced and designed to keep readers guessing until the very end. Sager's work has garnered significant international attention, with books translated into over 40 countries and selling over 4 million copies worldwide.









