Meet Grace, Gretchen and Greer – three teenage descendants of Medusa who must embrace their fates in a world where mythological monsters lurk in plain sight. Grace is new in town. It’s scary, starting over, but it gets scarier when she runs into a minotaur. And scarier still when a girl who looks just like her rocks up to fight it. Gretchen is fed up of fi ghting monsters, especially on school nights. Getting rid of a minotaur is easy, but she never expected to run into her double in the process. Greer is perfection personified. But her world is knocked off its immaculate axis when two identical girls appear on her doorstep and claim they’re all demon-hunting sisters.