| english title | Deadly Duo |
| original title | 雙俠 |
| french title | Duo Mortel |
| year | 1971 |
| country | Hong-Kong |
| director | CHANG Cheh - 張徹 | |
| actor | ||
| LO Wai | ||
| WONG Shu-Tong | ||
| YEUNG Chak-Lam | ||
| Chik Ngai-Hung | ||
| WONG Ching | ||
| CHENG Hong-Yip | ||
| YAU Lung | ||
| JIN Bong-jin | ||
| LAU Gong | ||
| Phillip KO Fei - 高飛 | ||
| LI Chiao | ||
| LEE Chiu Jun | ||
| LIANG Shang-Yun | ||
| YUEN Woo-Ping - 袁和平 | ||
| Danny CHOW Yun-Kin | ||
| TSUI Fat | ||
| HO Pak-Kwong | ||
| HSU Hsia | ||
| CHAN Chuen | ||
| Sunny YUEN Shun-Yi | ||
| YEN Shi-Kwan | ||
| WONG Ha | ||
| FUNG Hak-On | ||
| YUEN Cheung-Yan | ||
| Danny LEE Sau-Yin - 李修賢 | ||
| producer | Run Run SHAW | |
| action director | LIU Chia-Liang - 劉家良 | |
| TANG Chia | ||
| scriptwriter | NI Kuang | |
| assistant director | Godfrey HO Chi Keung |
| genres | kung-fu |
| duration | 77 min. |
| production studio | Shaw Brothers 邵氏 |
It's the Sung Dynasty versus the Chin invaders as the "Iron Triangle" of director Chang Cheh and stars David Chiang and Ti Lung truly hit their stride with this crowd-pleasing kung-fu epic. When a handsome Prince is taken captive and guarded by a martial arts master, it's up to two powerful patriots to fight overwhelming odds. From the first fascinating minute to the final desperate battle to the death - culminating in an unforgettably evocative conclusion - this duo is dynamic as well as deadly.
