Clare’s brother, Tom, also known as the pied piper, has stolen away the children of Hamelin. But Clare knows thats only half the story. Tom isnt the easiest person to love, but shes certain that he couldnt be so cruel. There has to be a good reason why he stole the Fae Queens magic pipe and led the children to a faraway land, never to be seen again. Together with Anna, the mayor of Hamelins daughter, Clare embarks on a journey into the Faerie Realms. In order to succeed, she will have to dodge faerie traps and stay out of the evil Rat Prince’s claws. Only she can save the children of Hamelin and clear her brother’s name. But who will she have to betray to do it?