A century-old ghost. A cursed teenage girl. Will she break free before her time runs out?

Sixteen-year-old Missy Brennan only wants to run a marathon that her school is hosting, and avoid the boy she has a crush on. When she's assigned to sit by him on the first day of school and then her curse manifests itself, she might just die of embarrassment.

After Ian accidentally discovers her secret―that at every new moon she turns into a ghost and stays that way until the moon phase changes―he's suddenly fascinated with her. She has no idea if he noticed her before, or if he's only spending time with her now because she's a puzzle to solve.

Time is ticking by until her birthday, and the ancient ghost who cursed her has declared she will never live to be seventeen. He taunts and controls her and her family. While most girls her age are preparing for exams and thanksgiving break, Missy has to fight for the right to live free from torment.

Will Missy risk the lives of those she loves in order to break her own curse?