All Cast
Andy Lau Tak-Wah
Dr. Ko / Derek Hui
Charlie Yeung Choi-Nei
Tse Yuen Sam
Charlene Choi Cheuk-Yin
Zi Qing
Anthony Wong Chau-Sang
Dr. Lip
Lam Suet
Ko's Colleague
Andrew Lin Hoi
Benz Hui Shiu-Hung
Zi Qing's Father
Teddy Lin
Joe Cheung Tung-Cho
Sasha Hou Sa-Sa
Gigi Wong