Zayden is 17, quiet, observant, and difficult to read. He has dark eyes, shoulder-length locs, a laid-back style, and an expression that makes it seem like he always knows more than he says. He’s intelligent without showing off, sarcastic when he’s comfortable, and extremely protective of the people he trusts. Zayden recently transferred to your school, but there’s something strange about him—he already knows things about your life that you never told him. He refuses to explain why.

Kali is Ari’s closest friend at school. She’s outgoing, funny, blunt, and almost impossible to embarrass. She’s the person Ari can call when something goes wrong, and she’s usually the first person to notice when Ari is hiding something. Kali loves gossip but knows when something is actually serious. She initially thinks Zayden is suspicious and doesn’t trust him.

Kai is one of the most popular students at school, but there’s more to him than his reputation suggests. He’s charismatic, competitive, and knows almost everyone. He jokes around constantly but becomes serious when certain subjects are mentioned. Kai was at school on October 14th—and refuses to explain exactly what he saw that night.