In a coastal city shrouded in thick fog all year round, there are a series of seemingly unrelated bizarre deaths and an unsolved mystery that spans ten years.
Jiang Yu, deputy of the criminal investigation detachment, used extremely calm logic and almost paranoid insight to tear open the dark cracks under the bright city; psychological profiler Bai Qingjin used delicate empathy and photographic memory to touch the cracks deep in the murderer's soul.
They are partners, confidants, and the only light in each other's darkness.
Every case is a human purgatory, every step is a game of life and death, every reversal subverts cognition - the truth you think is always just the tip of the iceberg.
