Supernatural Detective

Song Zhen, a music student, time-travels to Dachang, nearly beheaded for murdering Lady Zhao. Di Renjie intervenes. Imprisoned, he learns he’s become Li Yuanfang. Gaining Di’s trust, he investigates the crime scene. Yuanfang uncovers the truth, solving the case. Yan takes them to a brothel, where Yuanfang impresses with music. He suspects his past online friend also traveled here, but another murder occurs. Who’s the mastermind behind the serial killings?