When Eleanor Lythe was invited to attend a charity art ball with the rest of her children's home, she wasn't sure what to expect - but being fed on by semi-immortal vampires, bitten and turned into a slave of their evil race, certainly wasn't it. Luckily, for Eleanor, the Vigil - the covert branch of the U.S. Secret Service formed to fight the forces of the supernatural - is on hand to cure her and protect her. But save her for just what sort of life? As Eleanor struggles to master her new powers, she comes to realise that in humanity's struggle against the darkness, the wrong side could have saved her. Some of her fellow agents might be ripped hot - but does that actually matter if they are also willing to feed her to an ancient evil to achieve their mission? Because when your race is fighting a secret war for survival against vampires, zombies, werewolves, dark spirits, rogue angels and almost immortal Nazis, the worrying truth is . . . there might not be any safe side to trust!