The Secret Library of Hummingbird House

Hattie Maxwell is stressed. Ever since the Big Split, Hattie and her little sister Ivy, live a week with their mum and a week with their dad. They call it week-about. Now her beloved abandoned mansion, Hummingbird House, along with the best mulberry tree in the city, is going to be demolished to make way for apartments.

And if that’s not enough, if the apartments go ahead, her mum might move to the country and her family will never be together again. And if that is not enough, there is her friend-not-friend Taylor Dellabella, the terror of Ivy’s imaginary Eagle and her friend Patrick thinks his parents are breaking up. And if that's not enough, the rule obsessed school principal, The Enforcer (yes-not-her-real-name),wants to ban the monkey bars. And to top it all off, she has lost her library book.

When the moon is full, Hattie discovers a different Hummingbird House, where a strange orphan girl, Hypatia hides in a secret library. Could this be where she finds a way to save the house? Could saving the house get her parents back together? Can Hattie overcome her anxieties and save the house – and perhaps fix some other things in her life along the way?