Sandra Benson appears to have her life in order. A Christian with a popular talk radio show, she makes sure no one sees her struggles with alcohol and tries to tell herself it's not a big deal.

Then a caller who names himself "Lucifer" makes a startling statement - he killed a woman. Sandra is rattled by the call, especially when she learns she has a connection to the dead woman.

As her life slowly unravels thanks to Lucifer, Sandra struggles to help stop him. Because he isn't done killing - and she fears she may be next.