Rattleman

Dan and his Changeling girlfriend Maggie barely escaped the enchanted realm of Inland, and now they're searching for a way back to rescue her parents and find the First Changing Beast, the only way to connect Inland with the normal world...but Sister, the cruel witch, is waiting for them.
Dan and his friends decide their only choice is to lure Sister to follow them from Inland into the regular world, weakening her terrifying powers. As Josh quips: "What could go wrong?"
Well, plenty. Turns out that Sister doesn't lose all her powers when she comes to Outland. And Dan is hearing warnings about a new danger, the enigmatic Rattleman. Could the Rattleman be Maggie's odd friend the Green Goblin? Worse yet, could the Rattleman be Dan's therapist, Dr. Green?
Surrounded by mysteries and threats, Dan and his companions must overcome their fears and fulfill their missions even as they discover more about where they belong in two completely different worlds.