Except nobody is missing their clothes in this story. Instead, they are missing their secrets. That recurring nightmare actually stems from the sudden, paralysing terror of absolute vulnerability. It’s that feeling of standing exposed in front of a crowd that is judging your every flaw. McManus takes that specific anxiety, drops it into a school detention room, and attaches a murder investigation to it.

The setup feels like an old John Hughes movie with a dark, modern edge. Five students walk into detention at Bayview High. You know the line-up without even looking: the brainy girl (Bronwyn), the popular prom queen (Addy), the star baseball player (Cooper), the school drug dealer (Nate), and the bitter outcast (Simon). But before the hour ends, Simon drinks a glass of water, suffers a catastrophic allergic reaction to peanut oil, and dies right in front of them.

Here is the twist that turns a tragedy into a nightmare: Simon was quite the opposite of some random kid. He was the mastermind behind About That, a brutal, anonymous school gossip app. And the very next day, he was scheduled to drop a massive post that would have utterly ruined the lives of the other four kids in that room. The police ruled out an accident almost immediately. Just like that, these four teenagers are the prime suspects in a murder case.

The real pull of the story goes way beyond the whodunnit mechanics. If you watch enough true crime, you might see some of the clues coming. The true engine of the book is the sheer, suffocating paranoia. McManus handles the suspense by switching the perspective between all four suspects every few chapters. You get to sit inside their heads, seeing exactly how terrified they are. But it also means you realise just how much they are hiding from the cops, the media, and each other.

The secrets themselves are heavy. Bronwyn, with her future mapped out for the Ivy League, did something desperate to keep her perfect grades. Addy’s entire identity is wrapped up in being the perfect, loyal girlfriend, hiding a betrayal just to keep her social standing. Cooper is dealing with massive pressure from major league scouts while keeping a secret about his true identity that could ruin his career before it even starts. And Nate is just trying to survive a completely broken home, selling prescription pills to pay rent because the adults in his life totally abandoned him.

The second Simon dies, their armour is gone.

McManus is incredibly sharp when it comes to showing how vicious the world gets when a scandal breaks. The whole school turns on them like a pack of wolves. Classmates sell fake stories to the local news for a quick brush with fame, online comment sections turn into a toxic wasteland of theories, and news vans park outside their houses. They get treated like cheap clickbait instead of actual human beings going through a trauma. Because of the intense social isolation, the four suspects end up sitting together at lunch simply because nobody else will look them in the eye.

That reluctant alliance is the best part of the whole book. Forced into a corner, they have to stop playing the roles everyone assigned to them. They have to grow up in a matter of weeks. You watch Addy chop off her hair, dump her toxic boyfriend, and realise she actually has a spine. You watch Bronwyn realise that the world won’t end if her flaws are exposed. They discover that their real, messy selves are a lot tougher than the perfect images they were killing themselves to maintain.

The adults in the book are, frankly, pretty useless. Most of the parents are so worried about their own reputations, legal fees, or personal biases that they completely miss how terrified their kids are. This lack of a safety net forces the teenagers into a makeshift bunker mentality. They become each other’s only support system because the entire structure around them – the school, the police, their families – completely fails to protect them.

It’s a breathless, fast read. The constant perspective shifts keep you from ever getting too comfortable with one version of the story. You start doubting everyone, even the characters you’re actively rooting for, because you know they’ve all lied before.

One of Us Is Lying succeeds because it hits on a universal fear that extends way beyond high school: the terror of having your real self exposed to a deeply judgemental world. McManus took that exact, everyday anxiety, attached a body count to it, and created a thriller that keeps you hooked until the very last page. It’s a wild ride, and it proves that sometimes the only way to survive the pressure is to stop pretending you have everything under control.