Lisa Regan is an American crime writer best known for the Detective Josie Quinn series, a fast-moving line of police thrillers beginning with Vanishing Girls. Her books combine procedural suspense with emotionally charged cases involving missing people, hidden abuse,... family secrets, buried trauma, and the lasting damage violence leaves behind. Josie Quinn gives the series its center: a tough, wounded, persistent investigator whose personal history and relationships deepen alongside the crimes she solves. Regan has also written other crime fiction, but the Josie Quinn novels remain the defining part of her bibliography and the clearest entry point for new readers. Her appeal lies in twisty plotting, strong pace, dark atmosphere, and mysteries where old wounds rarely stay buried.