With the sex ring fully constructed and the townsfolk in peril, "The Serpent" explores the man behind the investigation, Wenatchee sex crimes detective Bob Perez. Incredibly, his troubled, nine year-old foster daughter, Donna Everett, becomes the impetus for the wild accusations that unfold. Donna, now 40 years-old, tells her gut-wrenching story for the very first time, revealing the shocking evolution of the lies, and the lives destroyed.