The neon lights in the city cover up evil, serial murders occur one after another, and strange marks are left on the bodies of the dead, causing the whole city to fall into panic.
Criminal investigation captain Lu Chen was ordered to face the danger, and he teamed up with Su Wanqiang, a calm and keen criminal psychologist, to uncover the clues in the fog and track down the real murderer in the abyss of human nature.
The long night is long, evil is lurking, every investigation is a game with death, and every reasoning is getting closer to the truth.
When dusty old cases intersect with current murders, and the mastermind behind the scenes is pressing harder, they must tear open the night before darkness falls, hunt down the real murderer, and keep the city's last light.
Concept: suspense story