An unexpected inspector drops by a lavish party of a notable family in order to investigate the suicide of a pregnant girl. This breaks the joy and peace of the party which is meant to celebrate a couple's engagement. Everyone claims that they do not know the girl. However, the inspector does find something suspicious there with the help of a diary and a photo. An astonishing truth is gradually revealed: six of the noble family members are closely related to the girl's death.
Unfortunately the movie An Inspector Calls is not yet available on HBO Max.
| Production | Edmond Wong | Executive Producer |
| Directing | Raymond Wong | Director |
| Writing | Edmond Wong | Screenplay |
| Production | Raymond Wong | Producer |
| Directing | Herman Yau | Director |
| Writing | J. B. Priestley | Theatre Play |
| Crew | Nicky Li Chung-Chi | Stunt Coordinator |
| Directing | Ricky Ko | First Assistant Director |
| Camera | Joe Chan Kwong-Hung | Director of Photography |
| Editing | Azrael Chung | Editor |
