(Paperback)

The Aviation Parade is coming to Forgetown this summer, and Harley Hitch is creating a flying machine that will really stand out: a flying robot hippogriff! But Harley wants the flying machine to be a surprise. She soon finds that keeping secrets leads to tricky explanations and lots of trouble, especially when REAL hippogriffs arrive!

(Paperback)

Harley is back with another inventive adventure! Eager to best her class nemesis Fenelda in the contest for best invention, Harley dreams big with her time travel machine. But sadly it doesn't seem to work. But what about the strange happenings around Inventia - and the huge dinosaur that has been spotted in Forgetown

(Paperback)

Join Harley, her robot dog Sprocket and best friend Cosmo for problem-solving adventures and mysteries in Inventia, a world where science rules and technology grows in the forest; and where exploding science projects, giant slugs and runaway robots are all part of a normal school day.

(Paperback)

Harley Hitch is back with another inventive adventure! When the circus comes to town, Harley's curiosity get the better of her - and she accidentally breaks a cabinet that makes things disappear! It soon becomes clear the Moon has gone missing. Is Harley to blame Can she sort out the mess before it's too late