A serial killer exposes casino players to a deadly drug to satisfy a personal grudge. How do you avoid something you can’t see? FBI Agent Mac Morris and her team are drawn into a chase when a US Senator asks her new boss to oversee his wife’s murder investigation. That’s when things turn personal for the team. As they travel from state to state, several agents suffer from exposure to the killer’s drug. Do they survive to see the case closed? Buy now to join the chase for this elusive killer!