Cast & crew
The Secret (1979)
Directed by Ann Hui Written by Joyce Chan Wan-Man
Cast
| Jue Sing-Choi | Sanitarium Nun |
| Leung Suk-Hing | Bubba's Mother |
| Alex Man Chi-Leung | Dr Chaleck |
| Wang Lai | Mamasan |
| Norman Tsui Siu-Keung | Saw |
| Yip Ping | Suzette Wong |
| Wong Hak | Hotel Recepcionist |
| Lin Jing | Bubba's Mother |
| Lam Wai-Tiu | Wai Lin |
| Lai Siu-Fong | Cheung |
| George Lam Tsz-Cheung | Cameo |
| Tsang Choh-Lam | Nightwatchman |
| Kwan Chung | Policeman |
| Chan Tung | Policeman |
| Angie Chiu Nga-Chi | Leung Yuen Ting |
| David Lam Tak-Luk | Hing Hing |
| Lee Hae-suk | Gei |
| Wellington Fung Wing | P Chan |
| Kenneth Tsang | Policeman |
| Lo Kwok Hung | Tung |
| Yat Boon-Chai | Policeman |
| Ng Tung | Kung |
| Law Ho-Kai | Ho-Kwan |
| Hoh Wan | Policeman |
| Luk Ying-Hong | Policeman |
| Lai Cheuk-Cheuk | Grandma |
| Sylvia Chang | Jeng |
| Cheng Lai-Fong | Wai Lin |
Crew
| Violet Lam | Original Music Composer |
| David Chung | Director of Photography |
| Lo Kai Muk | Executive Producer |
| Audrey Lee | Production Manager |
| Dick Cho | Costume Designer |
| Ann Hui | Director |
| Mike Chu | Title Graphics |
| Wu Sau Yee | Producer |
| Joyce Chan Wan-Man | Writer |
| Dick Cho | Art Direction |
| Hamilton Yu | Editor |
| Lam Siu-Wing | Gaffer |