Episode 4

S1 E4: YEUNG's mentor CHIU is killed during a bank robbery case and YEUNG believes that CHIT is the murderer. BUN is not able to return the cartoon figure to KIU. He tries to pretend that he is ill but KIU discovers that he is telling lies. BUN helps KIU to repair the computer security system of her company and they are reconciled. YEUNG's subordinate ON NA tries to follow CHIT but CHIT steals her identity cards tactfully. YEUNG discovers the next crime location and time by investigating the telephone number that SIN gave to TSEUNG. YUNG attends a job interview at LEI's bank. LEI's boss FLORA tries to pick faults on YUNG but LEI helps her to secure the job eventually. YEUNG believes that TSEUNG and SIN are going to rob but they escape before YEUNG arrives. YEUNG discovers that those who stay behind are senior government officials from Mainland China. This is actually a trick played by CHIT since he doesn't want to fight with YEUNG. He hopes that YEUNG will be assigned to other tasks after making such a big mistake.