When a boy she doesn't even know shows up at Cassidy's house after a book tells him to go there, Cassidy has to decide if she'll trust this boy . . . and the ghost that called him. Cassidy has never known her house was haunted, but once she finds out that a very important historical ghost calls her house his home and has for hundreds of years, she's thrust into an adventure that has her making new friends, trying new things, and discovering new worlds. Plus, when her little sister Eda begins to explore this new realm, she and her girlfriend Layla are launched into their own wild, wooly adventure around the world. Will Cassidy find what she most wants in all these adventures? Or will she be left longing?