Four Generations of Chasing the Murderer

The murder case of thirty years has not yet been settled, and the pursuit of the murderer has been passed down for four generations. The dark shadow in the brick kiln has become a knot in the heart of the old detective. Over the past few years, people have continued to pick up unfinished tasks. They came across the years and swore an oath together "This time, I won't let you escape again."