Riley Sager is the pen name of American novelist Todd Ritter, best known for polished standalone thrillers built around isolation, unreliable memory, buried trauma, and settings that feel dangerous before the plot fully reveals why. His breakout under the Sager... name came with Final Girls, which established his taste for high-concept suspense, cinematic pacing, and horror-inflected mystery. Later novels such as The Last Time I Lied, Lock Every Door, Home Before Dark, The Only One Left, and Middle of the Night continued that pattern, each offering a fresh premise rather than a recurring detective or shared series world. Sager’s appeal lies in fast hooks, atmospheric tension, reversals, and the unsettling sense that the past is never as finished as his characters want to believe.
