I've Fallen for You Episode 6

Tian San Qi asks Zhao Cuo to tell her everything that happened. Zhao Cuo said there was a mist with purple lights before he fainted. Bai Yi Fei helps Tian San Qi investigate the poison and they go to the morgue so she can perform the autopsies. They find out how the first victim died by doing an experiment with a giant doll. They learn that Lan Muyan is the only survivor from the fire three years ago. Zhao Cuo is about to be beheaded when Tian San Qi rushes over to say she knows who the murderer is. She accuses Leimo of the murder and finds the accomplice as well. The details of the fire three years ago is revealed. (Source: jindreame at MyDramaList)