Time And Space Crime Bureau: Chasing The Murderer By Cause And Effect

When detective Lin Shen was investigating a "suicide" case of an old man living alone, he discovered a fatal flaw - why did the deaf old man turn on the radio?
He closed his eyes and tried to restore the scene. Then he saw it.
I saw the murderer unscrewing the gas valve, I saw the man calmly adjusting the radio, I saw the man - turning around and looking at him.
A murderer who was supposed to be in the past could see him.
The 1987 Dongfeng Factory accident, his father who had been missing for 38 years, the return of the mysterious organization, and the annihilation across time and space... Lin Shen was forced to join the secret organization Space-Time Crime Bureau, and joined forces with his father's partner's daughter Su Wanqing to pursue the truth between observation and intervention, change and cost.
A detective who can see the past is involved in a conspiracy thirty-eight years ago. Every step is calculated, every choice has a price.