Nightshade

The fourth in the Jack Nightingale supernatural thriller series by bestselling author Stephen Leather. When a murdered young girl miraculously returns to life saying she's spoken to God, it's clear that sinister forces are at play. And when those who speak to her inexplicably commit suicide shortly after their encounter, Nightingale is called in to investigate. As he probes deeper into the chilling tale, he discovers a demon has possessed the girl's body... and the only way to banish it is to kill her. And that's not all the PI has to deal with. After a farmer kills eight people before turning the gun on himself in a school shooting, the press label him as a Satanist. But when his brother visits Nightingale claiming his sibling has been set up, it seems there might be more to the case than meets the eye. Can Nightingale discover the real reason for the murderous rampage and keep himself out of danger?