A psychopath, especially smart, and gentle-looking man cheated a 20-year-old female college student in the name of looking for his mother in the application of chance encounter, and then killed them. After killing three, the "fourth" Yun Jie thought he was really depressed, but as a result, she was kidnapped by him and Yun Jie disappeared. Her adoptive parents were very anxious, called the police, and then searched for it. After Yun Jie was arrested, he kept procrastinating and running away, and he found all the results. Later, Yun Jie escaped and was caught back. The man kept saying that Yun Jie lied to him and cut off her pulse. Later, the police found his residence. Finally, the man was killed and Yun Jie was saved. It turned out that the man was a mental derangement, thinking that everyone was guilty. He used to kill his parents himself. end