FROM THE #1 NEW YORK TIMES BESTSELLING AUTHOR OF GONE GIRL Libby Day was seven when her mother and two sisters were murdered in "The Satan Sacrifice" of Kinnakee, Kansas." She survived-and famously testified that her fifteen-year-old brother, Ben, was the killer. Twenty-five years later, the Kill Club-a secret secret society obsessed with notorious crimes-locates Libby and pumps her for details. They hope to discover proof that may free Ben. Libby hopes to turn a profit off her tragic history: She'll reconnect with the players from that night and report her findings to the club-for a fee. As Libby's search takes her from shabby Missouri strip clubs to abandoned Oklahoma tourist towns, the unimaginable truth emerges, and Libby finds herself right back where she started-on the run from a killer.