In the fourth and final horrific adventure in the award-winning Monstrumologist series, Will Henry encounters unprecedented terror, a terror that delves into the depths of the human soul. Will Henry has been through more than seems possible for a boy of fourteen. He’s been on the brink of death on more than one occasion, he has gazed into hell—and hell has stared back at him, and known his face. But through it all, Dr. Warthrop has been at his side. When Dr. Warthrop fears that Will’s loyalties may be shifting, he turns on Will with a fury, determined to reclaim his young apprentice’s devotion. And so Will must face one of the most horrific creatures of his monstrumology career—and he must face it alone. Over the course of one day, Will’s life—and Pellinor Warthrop’s destiny—will hang in the balance. In the terrifying depths of the Monstrumarium, they will face a monster more terrible than any they could have imagined—and their fates will be decided. “Beyond a simple finale, this is a brave statement about the duplexity of good and evil, and the deadly trap in which all of us are snared” (Booklist, starred review).

When Dr. Warthrop begins to doubt fourteen-year-old Will Henry's loyalty, he sets him against one of the most horrific creatures in the Monstrumarium unaware that Will's life and his own fate will lie in the balance.

When Dr. Warthrop begins to doubt fourteen-year-old Will Henry's loyalty, he sets him against one of the most horrific creatures in the Monstrumarium unaware that Will's life and his own fate will lie in the balance.

Will Henryis anassistant to a doctor with a most unusual speciality: monster hunting!In the short time he has lived with the doctor, Will has grown usedto late night callers and dangerous business. But when one visitor comes with the body of a young girl and the monster that was feeding on her, Will's world changes forever. The doctor has discovered a baby Anthropophagi- a headless monster that feeds through the mouthfuls of teeth in its chest - and it signals a growing number of Anthropophagi.Now, Will and the doctor must face the horror threatening to consume our world and find the rest of the monsters before it is too late...

We are not alone. Some call them devils or demons. But they are real. They are down there. And they are waiting for us to find them. In a cave in the Himalayas, a guide discovers a self-mutilated body with a warning: Satan exists. In the Kalahari Desert, a nun unearths evidence of a proto-human species and a deity called Older-than-Old. In Bosnia, something has been feeding upon the dead in a mass grave. So begins mankind’s most shocking realization: the underworld is a vast geological labyrinth populated by another race of beings. With all of Hell's precious resources and territories to be won, a global race ensues. Nations, armies, religions, and industries rush to colonize and exploit the subterranean frontier. A scientific expedition is launched westward to explore beneath the Pacific Ocean floor, both to catalog the riches there and to learn how life could develop in the sunless abyss. But in the dark underground, as humanity falls away from them, the scientists and mercenaries find themselves prey not only to the savage creatures, but also to their own treachery, mutiny, and greed. One thing is certain: Miles inside the earth, evil is very much alive.

In the fourth and final horrific adventure in the award-winning Monstrumologist series, Will Henry encounters unprecedented terror, a terror that delves into the depths of the human soul. Will Henry has been through more than seems possible for a boy of fourteen. He’s been on the brink of death on more than one occasion, he has gazed into hell—and hell has stared back at him, and known his face. But through it all, Dr. Warthrop has been at his side. When Dr. Warthrop fears that Will’s loyalties may be shifting, he turns on Will with a fury, determined to reclaim his young apprentice’s devotion. And so Will must face one of the most horrific creatures of his monstrumology career—and he must face it alone. Over the course of one day, Will’s life—and Pellinor Warthrop’s destiny—will hang in the balance. In the terrifying depths of the Monstrumarium, they will face a monster more terrible than any they could have imagined—and their fates will be decided. “Beyond a simple finale, this is a brave statement about the duplexity of good and evil, and the deadly trap in which all of us are snared” (Booklist, starred review).

The author of The Hunger delivers a “daring, soaring, and ultimately gut-wrenching” (The New York Times) conclusion to her critically acclaimed Taker Trilogy, bringing Lanore McIlvrae to a final encounter with Adair, her powerful nemesis. Dismayed by Adair’s otherworldly powers and afraid of his passionate temper, Lanore has run from him across time, even imprisoning him behind a wall for two centuries to save Jonathan, her eternal love. But instead of punishing her for her betrayal, Adair declared his love for Lanore once more and set her free. Now, Lanore has tracked Adair to his mystical island home to ask for one last favor. The Queen of the Underworld is keeping Jonathan as her consort, and Lanore wants Adair to send her to the hereafter so that she may beg for his release. Will she honor her promise to return to Adair? Or is her true intention to be reunited with Jonathan at any cost?