The Assassination of Vinci Hao

Vinci Hao, 15, was stabbed in the face and neck by two boys aged 14 and 17. Her father survived but she died five days later from her injuries. Investigators combed through social media to establish a connection between Yinhua and Wesley. They eventually came across a conversation between the pair on Skype. The day before Vinci's attack, they had exchanged a series of messages about how to carry it out.