Cast & crew
To Err Is Humane (1987)
Directed by Alfred Cheung Kin-Ting Written by Alex Law Kai-Yui, Alfred Cheung Kin-Ting, Keith Wong
Cast
| Sammo Hung Kam-Bo | Chung |
| Joey Wong | Dou Chou |
| Kenny Bee | Shing Biu |
| Shing Fui-On | Robber |
| Richard Ng Man-Tat | Superintendent |
| Wu Ma | Cameo |
| Bolo Yeung | Cameo |
| Carrie Ng Ka-Lai | 'Me Lai' Marston |
| Anthony Chan Yau | Detective Fritz |
| Charlie Cho Cha-Lee | Theater Manager |
| Joan Tong Lai-Kau | |
| Shing Fu-On | |
| Yuen Miu |
Crew
| Alex Law Kai-Yui | Screenplay |
| Alfred Cheung Kin-Ting | Screenplay |
| Alfred Cheung Kin-Ting | Director |
| Keith Wong | Story |
| Bosco Lam Tsz-Ho | Assistant Director |