The Nightmarys by Dan Poblocki

The source provides extensive excerpts from a novel, "The Nightmarys" by Dan Poblocki, detailing a supernatural mystery experienced by middle school students Timothy July and Abigail Tremens in the town of New Starkham, Massachusetts. The narrative follows Timothy and Abigail as they investigate strange occurrences, which are tied to an ancient curse powered by a magical jawbone connected to a past event involving Abigail's family and a professor named Dr. Christian Hesselius. Through their research and dangerous encounters, which include the appearance of terrifying illusions based on their fears (such as the Nightmarys and a dragon), the protagonists discover that the current tormentor is Jack Harwood, Hesselius's son, who is seeking revenge. The text concludes with the characters destroying the artifacts associated with the curse and beginning to move past their harrowing ordeal.