In Los Angeles in 1947, the Black Dahlia massacre shocked the United States.
An old-school tough guy police detective × a genius profiler team up to track down a female corpse with a weird smile.
What they uncovered step by step was not just an unsolved case,
It is also about the serial killings and the ghosts in the police station that span half a century.
And the darkest truth about life experience in the bloodline of genius detectives.
