Next time you switch on your computer are the unseen waiting to enter your mind, or are they already there?DI Fagan investigates the ritual murder of three young women and finds links between victims and a computer game. On examining hard drives from the murder victims' PCs, traces of subliminal hypnosis are found enticing victims to remote places where they are killed.When a fourth women is murdered in Ireland Fagan realises he hunts a killer capable of global influence. He also discovers governments both sides of the Atlantic are aware and observing. When his own daughters become involved, nightmare encircles him.Subliminal messaging is illegal. It cannot influence a person against their will but for the undecided or vulnerable it can embed into a mind and influence judgment, i.e. buy certain products, vote for a certain politician, kill your neighbour.