May is a prostitute with both a sick mother and son to look after. After being raped and accidentally killed by a group of construction workers, her ghostly self takes over the phone lines to execute revenge.
| Actor | Role |
|---|---|
 Anita Lee Yuen-WahMay Chan | May Chan |
 Lau Ching-WanOfficer Ma Fai | Officer Ma Fai |
 William HoLinesman Chan Ping | Linesman Chan Ping |
 James Ha Chim-SiLeung | Leung |
 Onitsuka Ng Kin-ChungKwai | Kwai |
 Peter Chan LungBiu | Biu |
 Gwennie TamKitty | Kitty |
 Helena Law LanMay's mom | May's mom |
 Ivy Leung Si-ManKwai's wife | Kwai's wife |
 Hui PuiKwai's mistress | Kwai's mistress |
 Ellen Chan Nga-LunWoman in bed [cameo] | Woman in bed [cameo] |
 Jamie Luk Kim-MingMan in bed [cameo] | Man in bed [cameo] |
 Derek Yee Tung-SingSupt [cameo] | Supt [cameo] |
 Billy Ching Sau-YatNot listed | Not listed |
 Stephan Yip Tin-HangNot listed | Not listed |
 David WuNot listed | Not listed |
 Felton Law Gwan-JohNot listed | Not listed |
| LLee Wai-SiNot listed | Not listed |
 Kingson Shek Siu-LunNot listed | Not listed |
| CChan Wai-LingNot listed | Not listed |
 Teddy Chan Tak-SamNot listed | Not listed |
| SSan LeungNot listed | Not listed |