The Engineer has a mission: to clean up the human gene pool.His method: killing women who have what he considers "e;defective"e; DNA.His primary victims are members of a self-help therapy group focused on body-shaming and body-image issues. The group includes two of Val Dawes's closest friends–and before long, Val becomes a target as well.Now the youngest-ever detective in the Clayton City Police, Val goes undercover to track down how the killer is identifying and isolating his victims. Soon the group becomes a powerful tool for her addressing own latent body-image issues.When her favorite, quirky barista goes missing, Val goes all out, willing to do whatever it takes to stop "e;The Engineer"e; before his killing spree reaches epidemic proportions.Can Val find her friend before she, too, falls victim to a deranged vigilante?