A Printz Award Honor Book
"Horror lovers will be rapt." ?Publishers Weekly

An orphan apprenticed to a monster hunter reveals their "page-turning, nightmarish adventures" (Kirkus Reviews) in this first book of the diary-style, historical gothic Monstrumologist young adult series.

These are the secrets I have kept.

Will Henry, an orphan in nineteenth-century New England, works as the assistant to a doctor with a most unusual specialty: monster hunting. In the short time he has lived with the doctor, Will has grown accustomed to his late-night callers and dangerous business. But when one visitor comes with the body of a young girl and the monster that was eating her, Will's world changes forever.

The doctor has discovered a baby Anthropophagus?a headless monster that feeds through a mouth in its chest?and it signals a growing number of Anthropophagi. Will and the doctor must face the horror threatening to overtake and consume the world…before it is too late.

Rick Yancey is the author of The Monstrumologist, The Curse of the Wendigo, The Isle of Blood, and The Final Descent. He is also the author of The Fifth Wave series. Rick lives with his wife Sandy and two sons in Gainesville, Florida. Visit him at RickYancey.com.

So begins the journal of Will Henry, orphaned assistant to Dr. Pellinore War throp, a man with a most unusual specialty: monstrumology, the study of monsters. In his time with the doctor, Will has met many a mysterious late-night visitor, and seen things he never imagined were real. But when a grave robber comes calling in the middle of the night with a grueso me find, he brings with him their most deadly case yet.

Critically acclaimed author Rick Yancey has written a gothic tour de force that explores the darkest heart of man and monster and asks the question: When does a man become the very thing he hunts?