"Trace" focuses on "case-based reasoning", and highlights the hidden human choice behind the case through the professional characteristics of the characters in the play. The director of this drama is Liu Zhangmu, who is also the director of the TV series "Breaking the Ice", which was popular last year. The quality of the plot is still very guaranteed. The play has a fast pace, but it doesn't drag on. Almost all are three episodes and one case!

The first case that appeared in the play was the female corpse case. The case ended like this: In the middle of the night, Huang Anli looked at the store alone, and Blue Ocean sneaked into the store and pounced on her with a dagger. The police who had been waiting for a long time rushed out and took the Blue Ocean uniform and sent it to the police station.

After being arrested, he did not deny that he was the murderer, but admitted to killing several young women, including Dong. His criminal motive is just as Liang speculated. He once found that his daughter Lan had a tattoo on her body. She was shocked and furious and scolded her. Since his daughter Lan Lan was killed, his psychology has been extremely distorted. He hates tattooed women and has embarked on a road of no return.

The third case, drowning case:

A few days later, a new case appeared. A female body appeared at the seaside, and Jia Ding and his party immediately rushed to the crime scene. The woman's body had many wounds and fell from the top of a cliff.

The cliff top marks show that the woman was dragged all the way by an adult man with a height of 178- 180 cm and a weight of about 70 kg. There are fragments of the victim's clothes on the edge of the cliff, which should have been hooked when she fell. The murderer left footprints at the scene, and Jia Ding looked at the death of the female corpse, some of which were sad.

The identity of the female victim has been confirmed. Ocean Lu, a 25-year-old fashion editor, gets off work at about 2 am every day. It is said that she didn't come home the night before yesterday, and her phone has been turned off. Her family didn't report the case until this morning.