LUNG discovers that HUNG is killed by poison. The police question KILDOORIE but he denies that he has sent out the threatening letter. LONG provides evidence and KILDOORIE finally admits that he has sent out one threatening letter but he didn’t killed HUNG. CHING asks LONG to use his supernatural powers to find hints. LONG sees two butterflies flying out from the grave. Since BONG has overheard HEI’s conversation with HUNG, he believes that HEI is suspicious. LONG and CHING carry out investigation on HEI. HEI finally admits that he is HUNG’s lover. LONG believes that he has found the murderer and he creates a trap for him to walk into it… The deadline set by HANG has come but LONG and CHING fail to find someone to take care of their son. HANG suddenly receives an anonymous letter accusing him for discriminating against officers with kids. He finally allows LONG and CHING to take care of their kid at the office temporar
