NEW YORK TIMES BESTSELLER - A NEW YORKER BEST BOOK OF THE YEAR - NOW IN DEVELOPMENT AS AN HBO LIMITED SERIES From the acclaimed author of Gone Girl a riveting tale of true horror by a writer who has all the gifts to pull it off (Chicago Tribune) Sensuous and chilling . . . a propulsive and twisty mystery. --Entertainment Weekly 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.