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 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.