Pearl and Vally Cole live in a bookshop. And not just any bookshop. In 1893, Cole’s Book Arcade in Melbourne is the grandest bookshop in the world, brimming with every curiosity imaginable. Each day brings fresh delights for the siblings - voice-changing sweets, talking parrots, a new story written just for them by their eccentric father. When Pearl and Vally learn that Pa has risked the Arcade - and himself - in a shocking deal with the mysterious Obscurosmith, the siblings hatch a plan. 

Alice-Miranda Highton-Smith-Kennigton-Jones can't wait to start boarding school. When she arrives at Winchesterfield-Downsfordvale Academy for Proper Young Ladies, the adventure begins...only not quite as Alice-Miranda expects. The minute she sets foot on the school's manicured grounds, she senses that something is wrong: Miss Grimm, the headmistress, is nowhere to be seen; the gardens have no flowers; and a mysterious stranger seems to be hiding out on the premises.

This is a tale of missing persons. Madeleine and her mother have run away from their former life and settled in a rainy corner of Cambridge (in our world). Elliot, on the other hand, is in search of his father, who disappeared on the night his uncle was found dead. As Madeleine and Elliot move closer to unraveling their mysteries, they begin to exchange messages across worlds - through an accidental gap that hasn't appeared in centuries. But even greater mysteries are unfolding on both sides of the gap...

Twelve-year-old Sophie has never quite fit into her life. She’s skipped multiple grades and doesn’t really connect with the older kids at school, but she’s not comfortable with her family, either. The reason? Sophie’s a Telepath, someone who can read minds. No one knows her secret - at least, that’s what she thinks.... But the day Sophie meets Fitz, a mysterious (and adorable) boy, she learns she’s not alone. He’s a Telepath too, and it turns out the reason she has never felt at home is that, well...she isn’t. Fitz opens Sophie’s eyes to a shocking truth....

Nanny Piggins, the world's most glamorous flying pig, runs away from the circus and goes to live with the Greens as their nanny. The Green children, Derrick, Samantha and Michael, fall in love with her instantly. Who could not fall in love with a Nanny whose only job qualifications are her astonishing ability to be fired out of a cannon and her amazing ability to make chocolate cake, sometimes both at the same time?