| 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) |
Fong is a writer who records all kinds of marital arts events and sells them to make a living. As he heard that there are victims killed butterfly, induced by his curiosity, he heads for Shum castle where he believes helding the key to the secret of these fatal attacks. However, master of the castle Shum Ching and other guests invited also become the victims of the butterfly during the investigation. It turns out that it is the conspiracy of Shen Cing, who wants to kills all the leaders and become the King of the martial art world…
This is Tsui's directory debut, which becomes a breaking example of romanticized swordplay with the most fantasizing imagery and story in the late 70's.
