Andy Lau Tak-Wah

Dr. Ko/Derek Hui

Charlie Yeung

Tse Yuen Sam

Charlene Choi Cheuk-Yin

Zi Qing

Anthony Wong Chau-Sang

Dr. Lip

Lam Suet

Ko's colleague

Andrew Lin

Hui Shiu-Hung

Zi Qing's father

Teddy Lin

Joe Cheung Tung-cho

Gigi Wong