C-Drama: Sunsets Secrets Regrets - 5 years undercover. 1 truth to unveil.

Once, they were inseparable friends from Zhizi Lane. Now, a cold-blooded murder case has brought them back together in a world of shadows. A detective seeking vengeance, a genius profiler, and a mole living a lie for five long years. They are now soldiers on different fronts of the same war. Can their bond survive the deception? Can wisdom and courage truly triumph over pure evil? Download iQIYI and join the hunt.