Sherman builds a tight, cerebral thriller around a mystery that refuses to sit still, following a man pulled into a labyrinth of espionage, hidden identities, and secrets coded so cleverly they feel alive. Every answer only deepens the puzzle, every ally could be an enemy, and the stakes keep rising as the truth twists into sharper, more dangerous shapes. With cool precision and steady tension, Riddle plays like vintage spy noir—smart, shadowy, and packed with the kind of intrigue that keeps you turning pages deep into the night.
Minor wear to cover.
