Eighteen-year-old Addie Blackwood regrets nothing more than one horrible, mistake-filled night last summer. Hours after she hurled the worst words she could think of at her sister, Fiona was found dead at the bottom of a ravine. The police ruled her death an accident, but Addie’s never bought it. Her ballet-prodigy sister didn’t slip and fall; she was pushed. And Addie’s number one suspect: Thatcher Montgomery, the rich kid down the street who always had a thing for Fiona. But when Thatcher is found dead in the same ravine, Addie must admit she was wrong.

Most people’s births aren’t immortalized in a police report—but Olivia was born during the infamous Camp Lost Lake murders. Seventeen years later, Olivia’s life looks pretty perfect . . . until she discovers the man she calls dad is not her biological father. Now she wants answers about her bloodline, and the only place she knows to look is Camp Lost Lake. Most people don’t spend their formative years on the run with an alleged murderer—but Reagan did. In the court of public opinion, her mom was found guilty of the deaths at Camp Lost Lake, and both of them have been in hiding ever since.

There’s something in the lake at Wren Hall. At least, that’s what the locals say. Not that Meg cares much about the rumors. When she’s asked to spend Halloween weekend at the Ireland retreat of the wealthy Wren twins, she recognizes the invitation for exactly what it is: her last, and only, chance to save her spot at Greyscott’s, the exclusive British art school she attended on scholarship until last summer. Clever, beautiful, and talented, the twins are the pride of Greyscott’s, and kindhearted Lottie Wren was once Meg’s closest friend. But not anymore.

Lucy Preston just wants to go on vacation. But being the daughter of a famous private detective means that sometimes, your beach vacay goes off the rails a bit. Think: a clandestine meeting at an abandoned amusement park—except instead of a meeting, Lucy and her mom find a body. Because of course they do.

Magdalena Herrera is about to graduate high school, but she already feels like an adult with serious responsibilities: caring for her ailing grandmother; working a part-time job; clandestine makeouts with a girl who has a boyfriend. And then there's her secret, which pulls her into the basement each night, drains her of energy, and leaves her bleeding. A secret that could hurt and even kill if it ever got out—like it did once before.