Gregor and Boots must return to the Underland to help ward off a plague. It is spreading fast, and when it claims one of Gregor's family, he begins to truly understand his role in the Prophecy of Blood. Gregor must summon all his power to end the biological warfare that threatens the fate of every warmblooded creature.

Spies have reported the sighting of a Rat King in the Underland, a character who has been legendary since the Middle Ages. Recognizable by its tremendous size and snow-white coat, the Rat King is destined to bring a World War to the Underland.

When eleven-year-old Gregor falls through a grate in the laundry room of his apartment building, he hurtles into the dark Underland, where spiders, rats and giant cockroaches coexist uneasily with humans. This world is on the brink of war, and Gregor's arrival is no accident. Gregor has a vital role to play in the Underland's uncertain future.

The suspenseful third installment in The Underland Chronicles by Suzanne Collins, New York Times bestselling author of The Hunger Games! With two prophecies fulfilled, Gregor is now focused on the Prophecy of Blood, which calls for Gregor and "the princess," Boots, to return to the Underland to help ward off a plague. His mom agrees to let them go -- on the condition that she travels with them. When they arrive in the subterranean city, the plague is spreading -- and one of Gregor's family is stricken. Only then does he understand his role in the prophecy. He must summon all his power to end the biological warfare, or the warmblood creatures of the Underland will die. The adventure continues in the third book in Suzanne Collins's New York Times bestselling middle grade series.

It's only a few months since Gregor and Boots returned from the Underland, leaving their mother behind to heal from the plague. Though Gregor's family receives frequent updates on her condition, they all know Gregor must return to fulfill his role as the warrior who is key to the Underlanders' survival.

Everyone in the Underland has been taking great pains to keep The Prophecy of Time from Gregor. Now, with an army of rats approaching, and his mum and sister still in Regalia, Gregor the warrior must gather up his courage to help defend Regalia and get his family home safely.

In the third installment of Suzanne Collins's New York Times bestselling The Underland Chronicles, Gregor must stop a plague from spreading through the Underland. With two prophecies fulfilled, Gregor is now focused on the Prophecy of Blood, which calls for Gregor and "the princess," Boots, to return to the Underland to help ward off a plague. His mom agrees to let them go--on the condition that she travels with them.When they arrive in the subterranean city, the plague is spreading--and one of Gregor's family is stricken. Only then does he understand his role in the prophecy. He must summon all his power to end the biological warfare, or the warmblood creatures of the Underland will die.The adventure continues in the third book in Suzanne Collins's New York Times bestselling middle grade series.