Chris Ryan

A deranged female serial killer stalks seven young people whom phone a radio call-in show to discuss their darkest fears and a night-long game of cat-and-mouse is put into motion by the darkly sinister-looking murderess.

Charles and Deborah act just like any normal suburban couple would, they have a daughter who they love dearly, they fight over everything, but they also generally love each other. The only difference is they kill, maim, and torture people.