What you don't know can kill you.

Something sinister has followed Ren Larson home through the dark winding roads of Los Angeles. Since he began investigating a series of murders, it has made its presence known. It murmurs in shadowed hallways. It watches from mirrors and whispers to his six-year-old child. It waits. His doctor says he's got a case of war nerves. His housekeeper warns of a malevolent spirit, maybe only folklore from her Caribbean childhood. But no one can stop the foul thing, she says, until it devours the soul for which it hungers--a soul that has ripened with a secret sin.