The Underland Chronicles Book Four: Gregor and the Marks of Secret

In the fourth volume of Suzanne Collins's acclaimed Underland Chronicles, Gregor faces a new crisis as the mysterious disappearance of the mice, or “nibblers,” threatens the balance of their world. Accompanied by the young queen Luxa, he embarks on a fact-finding mission, initially relieved to be free from prophecy. However, as they uncover a darker truth concerning the mice, Gregor’s skills as a warrior and rager are tested in this action-packed, suspenseful adventure leading to the final prophecy yet to be revealed.