A murder occurred on Yizhong Avenue. The suspect came and went without a trace. What is the X mark on his wrist? Does Nan Shanchen's sudden appearance help or hinder the police investigation? Will Yan Heng, captain of the Yao'an City Criminal Investigation Detachment, continue to trust Nan Shanchen because of his several evasions? What secrets are hidden behind
How it will end, we will wait and see——
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Purpose: In everything, we should follow the just and correct path