The first teaser trailer for Peacock’s One of Us Is Lying is here, and it sets up a grim mystery that’s sure to keep you on the edge of your seat.

Based on the best selling young adult novel of the same name by author Karen M. McManus, the series focuses on five high school students, all of whom walk into detention together.

Only four of the five make it out alive though. When everyone winds up a suspect following the events of detention, it soon becomes clear that everyone has also got secrets they’re trying to hide.

“Welcome back, Bayview,” says the voice of Simon (Mark McKenna) over the footage from the first season. “I hope you’re ready for a wild year, because it’s only the first day of school and one of these four made it my last.”

Check out the first teaser trailer for Peacock’s One of Us Is Lying below!

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The forthcoming series stars McKenna, Marianly Tejada, Cooper van Grootel, Annalisa Cochrane, Chibuikem Uche, Jessica McLeod, Barrett Carnahan and Melissa Collazo.

Behind the camera, Dario Madrona, best known for co-creating Netflix’s high school drama juggernaut Elite, will serve as showrunner on the series.

The task of writing the series falls to Erica Saleh, who will also serve as executive producer along with Madrona, John Sacchi, and Matt Groesch.

Currently, there’s no word on when we might expect to see One of Us is Lying premiere via Peacock.