A real murder case which was complicated by the ménage à trois relationship the victim had with the main suspects. As different witnesses narrated their conflicting stories, the case seemed set to lead to nowhere; especially when the real identity of the dead person was finally discovered.
Unfortunately the movie The Secret is not yet available on HBO Max.
| Directing | Ann Hui | Director |
| Writing | Joyce Chan | Writer |
| Art | Dick Cho | Art Direction |
| Costume & Make-Up | Dick Cho | Costume Designer |
| Production | Audrey Lee | Production Manager |
| Editing | Hamilton Yu | Editor |
| Production | Wu Sau Yee | Producer |
| Camera | David Chung | Director of Photography |
| Lighting | Lam Siu-Wing | Gaffer |
| Sound | Violet Lam | Original Music Composer |
| Crew | Mike Chu | Title Graphics |
| Production | Lo Kai Muk | Executive Producer |
