The Abyss Episode 23

Jiang Yan attempts to flee the country, tracked by Ning Zhen, who is secretly working with police captain Cao Jin. Wu Ke Ran also leaves the hospital, intending to confront Jiang Yan at the airport. A car chase ensues, ending with Jiang Yan's car crashing. The real mastermind is revealed to be Luo Yin, seeking revenge for his wife's death caused by a faulty drug from the Jiang Group. However, it's further unveiled that this "Luo Yin" is actually Wu Fei, who assumed the identity after the real Luo Yin was murdered. Wu Fei had been hired by the Jiang Group to find Ning Zhen's mother (who had evidence of the drug's issues), leading to a complex chain of events involving the evidence falling into the hands of Li Guo Kun before Wu Fei retrieved it. (Source: tvrili.com)