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.

Chuck Warren died tragically at the old abandoned mill, but Paz Espino knows it was no accident—there's a monster under the town, and she's determined to kill it before anyone else gets hurt. She'll need the help of her crew—inseparable friends, bound by a childhood pact stronger than diamonds, distance or death—to hunt it down. But she's up against a greater force of evil than she ever could have imagined.

Growing up in Slater, Isadora Chang never felt at ease in the repressive small town, even before she realized she was bisexual—but after the deaths of two childhood friends, Slater went from feeling claustrophobic to suffocating. So, Isa took off before the town could swallow her, too. Even though it meant leaving everything she knew behind, including her last surviving friend, Mason. When Isa’s abusive father dies, however, she agrees to come back from art school just long enough to collect the inheritance. But then Mason turns up at the cemetery with a revelation and a plea.

Erin and Max are two transgender teens trying to get to California. Max is desperate to finally transition, and Erin is longing to understand why she’s on this trip to begin with. The last she spoke to Max was when he suddenly broke up with her two years ago. But when they find themselves stranded in the middle of the woods in a small Kentucky town, they realize they have much bigger problems.

Maya has always belonged to Alana. After four years of dating, and on the precipice of graduating high school, Maya has been too terrified to consider the idea of life outside of their volatile relationship. Until she finds the courage to break up with Alana while they’re hiking in Southern California. Then Alana goes missing. As the police get involved and the media run wild with the story, everyone seems to think that Maya is lying about Alana’s disappearance. Secretly, Maya knows they’re right: if Alana’s dead, she’s the one to blame. But that’s not Maya’s only secret.