FBI Special Agent Zoe Prime suffers from a rare condition which also gives her a unique talent—she views the world through a lens of numbers. The numbers torment her, make her unable to relate to people, and give her a failed romantic life—yet they also allow her to see patterns that no other FBI agent can see. Zoe keeps her condition a secret, ashamed, in fear her colleagues may find out. In FACE OF DARKNESS (Book #6), victims are being found murdered in Salem, in ways and on dates which correlate to the infamous witch trials. Is a serial killer trying to recreate the past? What can the numbers mean? Zoe, meanwhile, has hit her own internal wall, as her personal life begins to unravel under the weight of her condition. Will this be the case that sets her over the edge?