This shocking psychological thriller explores the aftermath of one terrible night in the lives of two families, when Francis Scroll begins to suspect that the long-ago death of his brother is connected to the murder of another child.

On the evening of a small dinner party, nine-year-old Lucas Scroll was found floating face-down in his parents' bathtub. Lucas's friend Sam was the only person who could reveal the truth, but he was unable—or unwilling—to speak. Lucas's death was ruled a tragic accident, and Francis Scroll became an only child.

Twenty-three years later, Francis is forced to confront the past he buried long ago when Sam's own nine-year-old son goes missing, and Francis's vengeful father emerges as the prime suspect. In order to save the life of a young boy, Francis must unearth the complicated truth about what happened the night his brother died.

A twisty story of suspense, revenge, and justice, Boy, 9, Missing, tests the limits of memory to surprise fans of psychological thrillers like Defending Jacob by William Landay, and The Silent Patient by Alex Michaelides.