Mystery (2012)

Lu Jie is having coffee with her desperate friend Sang Qi, who believes her husband is cheating on her. At the same time at a hotel across the road from the coffee shop, Lu Jie sees her husband businessman Qiao Yongzhao entering the hotel with a young girl. A few hours later the girl Sun Xiaomin is run over and killed on a nearby motorway by a group of joyriding rich kids but when the police arrive they notice that Sun had been attacked before she was run over.