《Original sin》Episode 7 Synopsis
Four people in female dormitory were killed while climbing a mountain
A drag mark appeared on the riverside, and Zhao Xi happened to see a person walking with a body on his back late at night. She may have been the only person who had seen the murderer.
The police found the first crime scene - a pavilion on the edge of a cliff. In addition to the footprints of the deceased, there were two sets of vague footprints at the crime scene.Dai Yu conducted an autopsy on the deceased Zhang Yasong and found that the deceased suffered from a rare disease.
