The Viper's Head. Mathilda Holiday, #2

Everyone thinks she's dead. So why are they still coming after her?Tillie survived an attack by a powerful secret society of mages - and convinced them she didn't. For a moment, it looked like she and her sister Mattie had bought themselves time. They were wrong. When one of the society's agents resurfaces and begins stalking Tillie, it becomes clear that disappearing won't save her. If she wants to survive, she and her allies will have to do the unthinkable: dismantle an international magical organization that has operated in the shadows for centuries.
But how do you take down a cabal with limitless resources, ancient spells, and eyes everywhere?The Viper's Head is the second book in the Mathilda Holiday series - a fast-paced urban fantasy of secret societies, dangerous magic, and reluctant heroes fighting back.