One of us did it.

Five years ago, an 11-year-old Jeremy murdered his best friend to protect someone close to him. The town was in shock when they heard what he did, including Arianna, the little girl who witnessed it. Stoneybrook town was at peace with Jeremy away, but now he's back. Two days after his arrival, another murder went down, but luckily for him, he is not the only suspect. They are four teenagers, old-time besties. Four of them are suspects, but three of them are innocent. Who could the murderer be?