In pursuit of a serial killer, an FBI agent uncovers a series of occult clues that she must solve to end his terrifying killing spree.

A psicóloga e ex-promotora Hailey Dean ajuda seu amigo, o detetive Garland Fincher, a investigar uma série de assassinatos no Hospital Memorial de Atlanta. A namorada de Fincher, Dra. Meghan Phillips, é apontada como suspeita no primeiro crime.

Best friends Katie and Jess are inseparable and have always had each other's backs. When Jess begins a new serious relationship, Katie is unsure of the new perfect man and famous crime writer, Nick. She wants to support her friend's newfound happiness but is fiercely protective. Katie's obsession with Jess soon proves deadly and it is up to the recently vilified Nick to expose the bestie before it is too late.

O serial killer, Keith Jesperson, assassinou pelo menos oito mulheres durante um período de cinco anos, enquanto provocava as autoridades com recados inquietantes e confissões rabiscadas, assinadas com uma cara feliz.