Crime fiction has quietly discovered the retired. They have time, they have grievances, they are underestimated by nearly everyone including the police, and nobody watches them. Leah Orr takes that premise for a title in The Retirees, filed on our crime and thriller shelf.
Under six hours is a lean shape for the genre, and lean is usually a compliment here. It rules out the sprawling procedural with its committee of suspects and points instead at something tighter: a small cast, a contained situation, and a plot obliged to keep moving because there is no room in which to stall.