Kidnapped, assaulted and held captive for 18 hours, 15-year-old Kara Robinson plots a daring escape from a serial killer's apartment.

In 1987, a group of counselors accidentally unleash a decades' old evil on the last night of summer camp.

Quentin Jacobsen has spent a lifetime loving the magnificently adventurous Margo Roth Spiegelman from afar. So when she cracks open a window and climbs back into his life-dressed like a ninja and summoning him for an ingenious campaign of revenge-he follows. After their all-nighter ends and a new day breaks, Q arrives at school to discover that Margo, always an enigma, has now become a mystery. But Q soon learns that there are clues-and they're for him. Urged down a disconnected path, the closer he gets, the less Q sees of the girl he thought he knew.