A stylist assistant investigates her sister's death in a historic LA building, only to face a vengeful ghost of a serial killer who dismembered victims decades ago. She must escape before she's next.

During a Whiton University's pledge week, the carefree partying turns deadly when brutal murders start befalling the students, sending Ellery into a race against time to uncover the truth behind the school's dark secrets and the horrifying meaning of a recurring symbol: a single exclamation mark.