Sleuth Wu Nan 2: The Century-Old Cold Case

Sleuth Wu Nan 2: The Century-Old Cold Case Plot:

After cracking multiple important cases, detective Wu Nan faces the "century-old cold case" sealed for 20 years: the suspect of the serial murder case died strangely, but the crime scene replicated exactly the same modus operandi, reigniting doubts over the old case. His old partner suddenly went missing, and clues point to hidden secrets and dark human nature behind the case. While fighting the lurking real killer, Wu Nan must uncover the truth covered up in the old case. Can he lock onto the answer through layers of fog?