Season 1

KIM pleases YIN by sending her to the hospital for a checkup. KIM foresees that SHING will try to set WAH up by further bribing more witnesses. KIM finds that SHING has not followed the proper protocol in interrogating witnesses and complains about SHING to his boss. CHUN and NGAU blame KIM for not being able to help WAH. SHING tries more ways to stress WAH and she finally says the wrong thing. CHUN manages to bail WAH out but she disappears on the way home. YING worries about her and eventually finds her on top of a building. Luckily, she persuades her not to kill herself.

LONG and PAUL wait at the hospital for MO - the only witness able to prove that KWONG was the murderer, to wake up. However, the doctor announces his death. SHING goes out with KWONG and HO for a celebration after hearing the news. KIM fools them and wires them up to record their conversation. KIM hands his boss the tape and SHING’s post is temporarily relieved. PAUL interrogates another witness to WAH’s case, Dr. Chan. Dr. Chan tells him that SHING has paid him to testify against WAH. He also remembers that when KWONG brought some herbal tea for KWUN, he spilled some ink and left his finger prints on the prescription. However, the prescription has been taken to Shenzhen, so LONG crosses the border to look for the evidence.

Dr. Chan calls KIM to tell him about the new evidence. KIM and PAUL try to meet up with him. However, their car crashes on the way and PAUL is killed. When LONG finds the evidence, QI burns it. She explains that SHING set her up and forced her to help him. MO finally wakes up and testifies that KWONG is the killer. FONG gives YIN another sum of money. YIN marks down the details in a notebook and says that she will hand it all to KIM when he finishes with WAH’s case. QI hides from the police. KIM sends LONG to look for her. YING tries to persuade her to testify against KWONG, but she refuses.

LONG learns that QI is in a holiday cottage and goes to find her. YING helps her to escape. FONG sends YIN a lot of cash on KIM’s birthday as a present. She wants to return it but FONG forces her to take it. She dares not to tell KIM about it. YING persuades QI to testify against KWONG. On the way to meet KIM, she is hit by a car. Before she dies, she tells the passers-by how SHING bribed her. KIM finds a lot of money in the bedroom and YIN tells him that it came from FONG. She runs away after KIM yells at her. He is sorry when he finds out that FONG forced her to take the money.

YIN passes out on the street. When KIM sees her in the hospital, they forgive each other. KWONG is sentenced to death. SHING finds out that he has late stage cancer. He blames YING for ruining his life, but YING says that he deserves it. Before he dies, his whole life and his sins are played like a video once again in his mind. YING lets go of all her anger and is reincarnated. In the late 1970’s, the ICAC is set up to fight corruption. FONG emigrates to Taiwan in case of being charged with taking bribes. After giving birth to her son, YIN reports herself to the ICAC. KIM waits for her to be released from prison.