Seventeen-year-old Cassie is a natural at reading people. Piecing together the tiniest details, she can tell you who you are and what you want. But, it's not a skill that she's ever taken seriously. That is, until the FBI come knocking: they've begun a classified program that uses exceptional teenagers to crack infamous cold cases, and they need Cassie. What Cassie doesn't realize is that there's more at risk than a few unsolved homicides—especially when she's sent to live with a group of teens whose gifts are as unusual as her own

When 16-year-old Tess Kendrick is sent to live with her older sister, Ivy, she has no idea that the infamous Ivy Kendrick is Washington, DC's number-one "fixer" - known for making politicians' scandals go away for a price. No sooner does Tess enroll at Hardwicke Academy than she unwittingly follows in her sister's footsteps and becomes DC's premier high school fixer, solving problems for elite teens.

With ailing family to support, Evie Sage's employment status isn't just important, it's vital. So when a mishap with Rennedawn's most infamous Villain results in a job offer—naturally, she says yes. No job is perfect, of course, but even less so when you develop a teeny crush on your terrifying, temperamental, and undeniably hot boss. Don't find evil so attractive, Evie. But just when she's getting used to severed heads suspended from the ceiling and the odd squish of an errant eyeball beneath her heel, Evie suspects this dungeon has a huge rat . . . and not just the literal kind.

Kira's earliest memories are of living alone and wild in the woods. She has no idea how long she was on her own or what she had to do to survive, but she remembers the moment that Cady Bennett and one of her search-and-rescue dogs found her. Adopted into the Bennett family, Kira still struggles with human interaction years later, but she excels at the family business: search-and-rescue. Then Cady's estranged father asks for her help in locating a missing child—one of several visitors who has disappeared in the Sierra Glades National Park in the past 12 months.

Avery Grambs has a plan for a better future: Survive high school, win a scholarship, and get out. But her fortunes change in an instant when billionaire Tobias Hawthorne dies and leaves Avery virtually his entire fortune. The catch? Avery has no idea why - or even who Tobias Hawthorne is. To receive her inheritance, Avery must move into sprawling, secret passage-filled Hawthorne House, where every room bears the old man's touch - and his love of puzzles, riddles, and codes.