¿Quién mató a Alex?, 1. El misterio que nos une

Hannah is a sixteen-year-old girl who leads a boring, monotonous life in front of her computer and social media. But everything changes when she receives a Facebook message from a boy named Alex Crowell. Hannah goes to his profile to see who he is, but then something disturbing happens: Hannah discovers that the boy is dead. And what's even more chilling? The message she receives from him immediately afterward: Alex needs help finding out who killed him. Because love is stronger than death.