A NEW YORK TIMES BESTSELLER!“Pretty Little Liars meets The Breakfast Club” (EW.com) in this “flat-out addictive” (RT Book Reviews) story of what happens when five strangers walk into detention and only four walk out alive.   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.An EW.com Selection for the Book You Have to Read in May A Bustle.com Best Young Adult Book of May 2017 A Popcrush Most Anticipated Young Adult Book of May 2017A YALSA Best Fiction Book Nominee “You’ll tear through this juicy, super-fun (if murder can ever be fun?) thriller."—Bustle.com"This is no ordinary whodunit…surprising and relevant."—USA Today"Twisty plotting, breakneck pacing and intriguing characterisation add up to an exciting, single-sitting thrillerish treat."—The Guardian“An addictive, devour-in-one-sitting thriller with so many twists and turns you'll be wondering until the very end: Who really killed Simon?”—Kara Thomas, author of The Darkest Corners and Little Monsters★"[As] McManus's intense mystery unfolds...each character becomes more complex and nuanced, adding richness and depth to the suspense." —VOYA, Starred Review"This fast-paced blend of Gossip Girl, Pretty Little Liars, and classic John Hughes will leave readers racing to the finish as the try to unravel the mystery on their own."—Kirkus Reviews"A smart, twisted, and unpredictable YA mystery that will have readers guessing until the very end."—SLJ "An engaging, enticing look at the pressures of high school and the things that cause a person to lose control."—Booklist"Readers will have a hard time putting this clever page-turner down."-BookPage.com - from Amzon