They say opposites attract & for werewolves Anna & Charles this is certainly true. Charles the pack enforcer is a dominant alpha
- whereas Anna has the power to calm others of her kind. Now that werewolves have dared to reveal themselves to humans its their job to keep the pack in line. The pressure mounts when the FBI requires Charles assistance. Hes sent on a mission to Boston with Anna & they quickly realise that a serial killer is targeting werewolves. & that theyre next on the killers list.