On "Gray Wednesday" the Earth's poles suddenly reverse, world electronics are thrown into disarray, and ghosts suddenly appear. Every human being gets their own ghost, visible only to themselves, who shadows them 24/7. The ghosts are so disturbing that some people go insane and ghost-induced murders become pardonable offenses.
Three years later police detective Oscar Mariani starts to investigate the torture/murder of a teenage girl who has a strange 7-pointed star carved into her stomach. This is an especially distressing case for Oscar because he badly injured a teenage girl when the sudden appearance of his ghost on Gray Wednesday caused him to swerve his car.
Oscar's police colleagues and superiors want him to hand off the case but Oscar refuses. The disappearance of additional girls convinces Oscar that a serial killer is at work, and - despite many barriers thrown in his path - Oscar continues to hunt the murderer.
Oscar's investigation leads him to bizarre and dangerous situations that endanger his and his police partner's lives. It's an engrossing story that contains supernatural creatures, bad cops, beautiful women, disgraced friends and more...all leading to a satisfying concluson.