After glimpsing an older man in a room with a dead girl, sixteen-year-old Allie, who has a life-threatening allergy to sunlight, discovers she is the lone key to stopping a serial killer.
Despite her fatal allergy to sunlight, XP, and the risk to all she holds dear, Allie Kim is determined to see Garrett Tabor brought to justice and may get her chance when she and Rob uncover a horrible secret Tabor has hidden under Lake Superior.