Seven months. That’s how long I was kept captive. My only solace was Mason - one of the other kidnapped teens - and our pact to one day escape together. But when that day finally came, I had to leave him behind. Now that I’m home, my parents and friends want everything to be like it was before I left. But they don’t understand that dining out and shopping trips can’t heal what’s broken inside me. When I ask the detectives assigned to my case about Mason, I get an answer I don’t believe - that there were no traces of any other kidnapped kids.

Everyone knows the Ivies: the most coveted universities in the United States. Far more important are the Ivies. The Ivies at Claflin Academy, that is. Five girls with the same mission: to get into the Ivy League by any means necessary. I would know. I'm one of them. We disrupt class ranks, club leaderships, and academic competitions...among other things. We improve our own odds by decreasing the fortunes of others. Because hyper-elite competitive college admissions is serious business. And in some cases, it's deadly.

Ellingham Academy is a famous private school in Vermont for the brightest thinkers, inventors, and artists. It was founded by Albert Ellingham, an early 20th century tycoon, who wanted to make a wonderful place full of riddles, twisting pathways, and gardens. "A place," he said, "where learning is a game." Shortly after the school opened, his wife and daughter were kidnapped. The only real clue was a mocking riddle listing methods of murder, signed with the frightening pseudonym "Truly, Devious".

Stella and Ellie Steckler are only a year apart, but their different personalities make their relationship complicated. Stella is single-minded, driven, and she keeps to herself. Cross-country running is her life and she won't let anything get in the way of being the best. Her sister Ellie is a talented runner too, but she also lets herself have fun. She has friends. She goes to parties. She has a life off the course.

Jagged Island: a private amusement park for the very rich—or the very influential. Liam, James, Will, Ava, Harper, and Paisley—social media influencers with millions of followers—have been invited for an exclusive weekend before the park opens. They’ll make posts and videos for their channels and report every second of their VIP treatment. When the teens arrive, they're stunned: the resort is even better than they’d imagined. But soon they'll discover that something's missing from their schedule: getting off the island alive.