- Country: South Korea
- Genres: Drama, Romance, Thriller
- Release: 2013-05-27
- Director: N/A
- Writers: N/A
- Language: Korean
- Stars: Kim Nam-gil , Kim Nam-gil , Son Ye-jin , Seok-jin Ha , Lee Hanee , Jeong-kil Lee , Bo-ra Nam , Lee Si-eon , Kyu-chul Kim , Soo-hyuk Lee , Won-joong Jung
- Runtime: min
- Awards: 1 win & 4 nominations
- AKA: Don't Look Back: The Legend of Orpheus (Indonesia) , Don't Look Back: The Legend of Orpheus (United States of America) , Shark , Don't Look Back: The Legend of Orpheus (United Kingdom) , Don't Look Back: The Legend of Orpheus , Triunghiul răzbunării (Romania) , サメ 〜愛の黙示録〜 (Japan) , Shark (Germany) , Sangeo (Korea) , Sangeo
- Plot: After his father's demise at the hand of Gaya Hotel Group, Han Yi Soo has lived for one thing only: vengeance. But there's a huge obstacle in Yi Soo's way: his inconvenient love for Jo Hae Woo, the heiress to Gaya Hotel Group.
- IMDB:tt2932820
Shark Cast · · · ALL
Son Ye-jin
Jo Hae-woo
Kim Nam-gil
Han Yi-soo
Yeon Jun-seok
Han Yi-soo (young)
Soo-jin Kyung
Jo Hae-woo (young)
Soo-hyuk Lee
Kim Soo-hyun
Bo-ra Nam
Han Yi-hyun
Kyu-chul Kim
Jo Eui-seon
Seok-jin Ha
Oh Joon-young
Won-sang Park
Detective Byun Bang-jin
Lee Hanee
Jang Young-hee
Ae-Yeon Jeong
Lee Hwa-young
In-gi Jeong
Han Young-man
Seo-Hyun Ahn
Han Yi-hyun (young)
Young Hak No
Oh Joon-young (young)