The Secrets of the Pied Piper 3: The Piper's Apprentice

The epic conclusion to the trilogy bestselling author Adam Gidwitz called “a wild fantasy adventure” find siblings Max and Carter embroiled in the final battle against the evil Grannie Yaga!
 
On the mysterious Summer Isle, siblings Max and Carter discovered the magical land where the villainous Pied Piper led the children of Hamelin centuries ago. They were trapped outside of time in a never-ending clash against a vicious rat army. After a desperate battle with a cruel soul-stealing magician, Max and Carter found themselves separated: Max with their newfound allies (human and trollson alike), Carter with . . . the Piper.
 
Now Max is determined to reunite with her lost brother, restore her parents’ stolen souls, and… Keep Reading