Andy Lau
— Eric
溫碧霞
— Pauline Leung Pui-Kwun / P. K.
Loletta Lee Lai-Chun
— Lulu Leung
吳孟達
— Bob
Leung Chau-Mei
— Harriet
張鴻昌
— Poon Sai-Hung
Patrick
— Eagle
葉觀楫
— Lulu's Principal
傅宏達
— Eric's Father
Leung Yu-Kan
林應發
— Ching
Cheung Nam-Si
Chan Git Leung
Kwong Chan-Chau
Mok Chui-Jan
— Reformatory Head
Lau Siu-Pooi
Annabelle Louie
Ken Boyle
— German Tourist
Chow Shing-Boh
— Mr. King
張婉華
— Lulu's Friend
徐愛心
— Patient
Wong Hung
— Man in Elevator
Yat Boon-Chai
— Policeman
Lau Ying-Lung
— Hung's Clubbing Friend
Ding Yuen-Kin
— Massage Parlour's Thug
Steve Daw
— Mr. Robinson