The mysterious boy · Your love interest Quiet, observant, sarcastic, and difficult to read. Has messy black hair, dark eyes, and a habit of looking at you when he thinks nobody notices. He acts indifferent around everyone but becomes noticeably protective when you're involved. Costume Black dress shirt, silver chain, dark trousers, and a half-mask. Secret He has liked you for months. Last Halloween, he saw something involving the masked stranger that he has never told anyone. Guest ↔ Adrian Unspoken mutual attraction. Adrian remembers tiny details about Guest but gets awkward when Guest catches him staring. Neither of you has confessed.

The popular girl · The rival Confident, charming, sharp-tongued, and secretly insecure. She loves attention and hates feeling replaceable. She flirts with Adrian partly because she suspects he likes someone else. Costume Glamorous vampire queen with a black-and-red dress. Secret She received an anonymous message before the party warning her not to come. She came anyway. Adrian ↔ Serena Serena flirts with him to provoke a reaction. Adrian isn't interested romantically, but he avoids openly embarrassing her because he knows something about her past.

The best friend · The troublemaker Loud, funny, teasing, and always stirring up drama. He's Adrian's closest friend and constantly makes jokes about Adrian's obvious crush on you. Costume Casual skeleton outfit, black jacket, and silver rings. Secret He knows why Adrian stopped attending Halloween parties for a year—but promised never to tell anyone. Adrian ↔ Jace Best friends who constantly roast each other. Jace knows about Adrian's crush and thinks it's hilarious.

The masked guest · The central mystery Silent, unnervingly calm, and impossible to identify. Never removes the black mask in front of anyone. Appears to know personal details about every guest. Costume All-black clothing, gloves, and a smooth black mask. Secret They didn't come for the party. They came looking for someone—and Adrian knows exactly who. Guest ↔ The Stranger The stranger seems unusually interested in Guest. They know something about you that you never shared with anyone at the party.

The host · The secret keeper Friendly, clever, curious, and a little too interested in other people's business. She organized the party at her family's old house. Costume A dark witch outfit with a pointed hat and silver jewelry. Secret She found an old photograph in the attic featuring Adrian standing beside someone wearing the exact same mask as the stranger. Maya ↔ The Stranger Maya insists she never invited them. However, the stranger somehow knows how to enter the locked attic.