SING-YUE reveals to SIU-NAM that he is no longer investigating the serial murder case. SIU-NAM discovers that SAI-YIN’s assistant KELLY is tidying up the house for SAI-YIN and he believes that KELLY has become SAI-YIN’s new girlfriend but SAI-YIN denies. SAI-YIN drinks alone in the pub again and ERIC suddenly appears. ERIC persuades SAI-YIN to find the serial murder and SAI-YIN is also interested to do so. LAI-HING brings SAI-TING to visit the doctor again and she is shocked to discover that SAI-TING is singing CHI-YING’s favorite song in childhood. When KELLY helps SAI-YIN to tidy up his place, SAI-YIN tries to seduce her again. KELLY doesn’t really want it but she finally sleep with SAI-YIN. However, SAI-YIN sleeps with KELLY only because he wants to test if KELLY is the serial killer. SIU-NAM worries that CHOR-KIU will lose hope in love after the separation with SAI-YIN.… ...