Chloe Sevre is a freshman honor student, a legging-wearing hot girl next door, who also happens to be a psychopath. She spends her time on yogalates, frat parties, and plotting to kill Will Bachman, a childhood friend who grievously wronged her. Chloe is one of seven students at her D.C.-based college who are part of an unusual clinical study of psychopaths. When one of the students in the study is found murdered, Chloe goes from hunter to prey. As she races to identify the killer and put her own plan for revenge into action, she'll be forced to decide if she can trust any of her fellow psychopaths - and everybody knows you should never trust a psychopath.