Meet Leonard, a man who will help you die with a smile on your face. A young attorney meets his client for the first time, a serial killer known as the "Smiley Face Killer", whose victims all died with a smile on their faces.
| Actor | Role |
|---|---|
 Simon YamLeonard | Leonard |
 Nick Cheung Ka-FaiWebmaster | Webmaster |
 Mo Tzu-yiWoo | Woo |
 Kenny Wong Tak-BanProfessor | Professor |
 Pal Sinn Lap-ManBank Robber | Bank Robber |
 Mimi Kung Chi-YanMrs Yip | Mrs Yip |
 Chen RanAlison | Alison |
 Evelyn Choi Wing-YanMaple | Maple |
 Liu Kai-ChiMr Yip | Mr Yip |
 Au Hin-WaiNot listed | Not listed |
 Zhang RanNot listed | Not listed |