For high school senior Nell and her friends, a vacation house on a private Florida island sounds like the makings of a dream spring break. But Nell brings secrets with her—secrets that fuse with the island's tragic history, trapping them all with a curse that surrounds the island in a toxic, vengeful mist and the surrounding waters with an unseen, devouring beast. Getting out alive means risking her friendships, her sanity, and even her own life.

Eighteen-year-old Aihui Ying dreams of becoming a world-class engineer like her father, but after his sudden murder, her life falls apart. Left with only a journal of her father’s engineering secrets and a jade pendant snatched from the assassin, a heartbroken Ying follows the trail to the capital and the prestigious Engineers Guild, determined to discover why anyone would threaten a man who ultimately chose a quiet life over fame and fortune. Disguised as her brother, Ying manages to infiltrate the guild’s male-only apprenticeship trial with the help of an unlikely ally.

No one loves musicals more than Riley Morris—her dream is to be a Broadway director. But when the spring show is canceled, Riley has to figure out a way to bring it back. Easier said than done—she’s stuck working at her dad’s game store. The place that means more to him than his family does. Riley can't waste time at a dead-end job when her entire future is resting on making a name for herself. So she convinces her co-worker Nathan Wheeler—the floppy-haired, glasses-wearing guy she barely knows from school—to help her. In exchange, she’ll help him make his gamer-girl crush jealous.

Anisa Ellahi dreams of being a translator of “great works of literature,” but instead mostly spends her days subtitling Bollywood movies, living off her parents’ generous allowance, and discussing the “underside of life” with her best friend, Naima. Anisa’s mediocre white boyfriend, Adam, only adds to her growing sense of inadequacy with his savant-level aptitude for languages, successfully leveraging his expansive knowledge into an enviable career. But when Adam learns to speak Urdu with native fluency practically overnight, Anisa forces him to reveal his secret.

The fire wasn’t Marlowe Wexler’s fault. Dates should be hot, but not hot enough to warrant literal firefighters. Akilah, the girl Marlowe has been in love with for years, will never go out with her again. No one dates an accidental arsonist. With her house-sitting career up in flames, it seems the universe owes Marlowe a new summer job, and that’s how she ends up at Morning House, a mansion built on an island in the 1920s and abandoned shortly thereafter. It’s easy enough, giving tours. Low risk of fire. High chance of getting bored talking about stained glass and nut cutlets and Prohibition.