The W Files

In the 1930s, Wisely returns to China from his overseas studies and runs a detective agency in Shanghai to investigate paranormal events. He meets a doctor named Pak So and she becomes his love interest, but they encounter several trials and tribulations to test their love before they finally get together. The series is divided into eight different stories, with Wisely and his team setting off to investigate and crack each mystery case.
(Source: Wikipedia)
~~ Adapted from the novel series "Wisely Series" (衛斯理系列) by Ni Kuang (倪匡).