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. -- amazon.com....

Three unlikely heroes--Patch Brightwater, a boy in disgrace, Wren, a girl cursed to live as a rat, and Barver, a fire-breathing dracogriff--discover a deadly truth: the evil Piper of Hamelyn is on the loose! Can they stop him before he sparks the biggest battle of them all?

The people of Hamelin agree to pay a hefty sum to a piper who promises to end the plague of rats infesting their town. But when they refuse to pay him after the job is completed, he takes a horrible revenge.

Clare's brother, Tom, also known as the pied piper, has stolen away the children of Hamelin. But Clare knows that's only half the story. Tom isn't the easiest person to love, but she's certain that he couldn't be so cruel. There has to be a good reason why he stole the Fae Queen's magic pipe and led the children to a faraway land, never to be seen again. Together with Anna, the mayor of Hamelin's daughter, Clare embarks on a journey into the Faerie...