| english title | The Butterfly Murders |
| original title | 蝶變 |
| year | 1979 |
| country | Hong-Kong |
| director | TSUI Hark - 徐克 | |
| actor | LAU Siu-Ming | |
| Jojo CHAN Kei-Kei | ||
| WONG Shu-Tong | ||
| Danny CHOW Yun-Kin | ||
| Tino WONG Cheung | ||
| Eddy KO Hung - 高雄 | ||
| WONG Su-Tong | ||
| Norman CHU Siu-Keung - 徐少強 | ||
| CHEUNG Kwok-Chu | ||
| CHAN Kei-Kei | ||
| MAI Suet - 米雪 | ||
| Michelle CHAN Kei-Kei | ||
| producer | NG See-Yuen | |
| action director | Tino WONG Cheung | |
| WONG Shu-Tong | ||
| Danny CHOW Yun-Kin | ||
| composer | Frankie CHAN Fan-Kei - 陳勳奇 | |
| CHAN Piu | ||
| scriptwriter | LAM Chi-Ming |
| genres | fantasy wu xia pian (swordplay) |
