Quentin Jacobsen has spent a lifetime loving the magnificent Margo Roth Spiegelman from afar. So when she cracks open a window and climbs back into his life—summoning him for an ingenious campaign of revenge—he follows. When their all-nighter ends and a new day breaks, Margo has disappeared. But Q soon learns that there are clues—and they’re for him. Embarking on an exhilarating adventure to find her, the closer Q gets, the less he sees the girl he thought he knew.

Pay close attention and you might solve this. On Monday afternoon, five students at Bayview High walk into detention. Bronwyn, the brain, is Yale-bound and never breaks a rule. Addy,the beauty, is the picture-perfect homecoming princess. Nate, the criminal, is already on probation for dealing. Cooper, the athlete, is the all-star baseball pitcher. And Simon, the outcast, is the creator of Bayview High’s notorious gossip app. Only, Simon never makes it out of that classroom. Before the end of detention Simon's dead. And according to investigators, his death wasn’t an accident. On Monday, he died. But on Tuesday, he’d planned to post juicy reveals about all four of his high-profile classmates, which makes all four of them suspects in his murder. Or are they the perfect patsies for a killer who’s still on the loose? Everyone has secrets, right? What really matters is how far you would go to protect them.

Ellingham Academy is a famous private school in Vermont for the brightest thinkers, inventors, and artists. It was founded by Albert Ellingham, an early twentieth 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.” It became one of the great unsolved crimes of American history. True-crime aficionado Stevie Bell is set to begin her first year at Ellingham Academy, and she has an ambitious plan: She will solve this cold case. That is, she will solve the case when she gets a grip on her demanding new school life and her housemates: the inventor, the novelist, the actor, the artist, and the jokester. But something strange is happening. Truly Devious makes a surprise return, and death revisits Ellingham Academy. The past has crawled out of its grave. Someone has gotten away with murder.

What do the queen bee, star athlete, valedictorian, stoner, loner, and music geek all have in common? They were all invited to a scholarship dinner, only to discover it's a trap. Someone has locked them into a room with a bomb, a syringe filled with poison, and a note saying they have an hour to pick someone to kill ... or else everyone dies. Amber Prescott is determined to get her classmates and herself out of the room alive, but that might be easier said than done. No one knows how they're all connected or who would want them dead. As they retrace the events over the past year that might have triggered their captor's ultimatum, it becomes clear that everyone is hiding something. And with the clock ticking down, confusion turns into fear, and fear morphs into panic as they race to answer the biggest question: Who will they choose to die?

In Gold Coast, Long Island, everything from the expensive downtown shops to the manicured beaches, to the pressed uniforms of Jill Newman and her friends, looks perfect. But as Jill found out three years ago, nothing is as it seems. Freshman year Jill's best friend, the brilliant, dazzling Shaila Arnold, was killed by her boyfriend. After that dark night on the beach, Graham confessed, the case was closed, and Jill tried to move on. Now, it's Jill's senior year and she's determined to make it her best yet. After all, she's a senior and a Player--a member of Gold Coast Prep's exclusive, not-so-secret secret society. Senior Players have the best parties, highest grades and the admiration of the entire school. This is going to be Jill's year. She's sure of it. But when Jill starts getting texts proclaiming Graham's innocence, her dreams of the perfect senior year start to crumble. If Graham didn't kill Shaila, who did? Jill vows to find out, but digging deeper could mean putting her friendships, and her future, in jeopardy.