Tony Leung Ka-fai
— Inspector So
鄭裕玲
— Ching
Cheng Pak-Lam
— Berlin
吳孟達
— Uncle Tat
Do Siu-Chun
— Cousin
Moon Lee Choi-Fung
— Woo Shiu Fung/Mosquito Paper
龍天生
— Seng
曹榮
— Lollipop
李道瑜
— Doctor
Yau Gin-Gwok
— Diamond thief leader
蔡國強
— Keung
鄧超友
— Diamond Theif
Won Jin
— Luk's Mute Sifu
陸劍明
— Mahjong Player Luk
梁啟智
— Mahjong Player
麥樹燊
— Mahjong Player
王文成
— Furniture Mover
黃偉亮
— Drug Trafficker
朱祖權
— Drug Trafficker
譚偉民
— Drug Buyer
陳世騰
— Security Guard
蔡國平
— Armed Security Guard
胡榮達
張旭燊
— Anti-Narcotic Cop