Directed by
| Hwang Dong-hyuk | ||
Writing Credits
| Ji-young Gong | ... | (based upon the novel by) (as Jee-young Cong) |
| Hwang Dong-hyuk | ... | (screenplay adaptation) |
Cast (in credits order)
| Gong Yoo | ... | Kang In-ho | |
| Jung Yu-mi | ... | Seo Yoo-jin | |
 |
Kim Hyeon-soo | ... | Kim Yeon-doo (as Hyeon-soo Kim) |
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Kim Jee-young | ... | In-ho's grandmother (as Ji-yeong Kim) |
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In-seo Jeong | ... | Jin Yoo-ri |
| Baek Seung-hwan | ... | Jeon Min-soo (as Seung-hwan Baek) | |
| Park Hye-jin | ... | Headmaster's Wife (as Hye-jin Park) | |
| Jang Gwang | ... | Principal / Principal's Brother | |
| Rest of cast listed alphabetically: | |||
| Jeon Gook-hwan | ... | Attorney Hwang (as Kuk-Hwan Jeon) | |
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Seok-yeon Hong | ... | School Custodian / Guard (as Suk-Youn Hong) |
| Eom Hyo-Seob | ... | Police Officer Jang | |
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Lim Hyun-sung | ... | Young-Hoon (as Hyun-sung Lim) |
| Heo Jae-ho | ... | Broadcasting Station PD | |
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Eom Ji-seong | ... | Young-soo (as Ji Sung Uhm) |
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Kim Ji-young | ... | Sol-yi |
| Choi Jin-ho | ... | Prosecutor | |
| Kim Joo-ryung | ... | Yoon Ja-ae (as Joo-Ryung Kim) | |
| Kim Min-sang | ... | Park Bo-hyun | |
| Nam Myung-ryul | ... | Professor Kim Jung-woo (as Myung-Ryul Nam) | |
| Jang So-yeon | ... | Courtroom Sign Language Interpreter | |
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Kwon Yoo-Jin | ... | Judge |
Produced by
| Joon-hwan Choi | ... | executive producer |
| Yong-hoon Eom | ... | producer |
| Katharine Kim | ... | executive producer |
| Sang-moo Lee | ... | associate producer |
| Byung-jin Na | ... | producer |
Music by
| Mowg | ||
Cinematography by
| Kim Ji-yong | ||
Editing by
| Sung-Won Hahm | ... | (as Sung-won Ham) |
Production Design by
| Chae Kyoung-sun | ||
Costume Design by
| Im Seung-hee | ... | (as Seung-Hee Im) |
Makeup Department
| Dohee Kim | ... | makeup department head |
Sound Department
| Hyukjin Chang | ... | mixing engineer |
| Myung-Hwan Han | ... | sound supervisor |
| Seung-cheol Lee | ... | sound supervisor |
Special Effects by
| Si Wan Kim | ... | special effects |
Visual Effects by
| Tae-hun Kim | ... | visual effects supervisor |
Camera and Electrical Department
| Kim Byung-seo | ... | camera operator: "b" camera (as Byung-seo Kim) |
| Ju-Hyun Park | ... | lighting technician |
Music Department
| Mowg | ... | music producer |
Additional Crew
| Jin-seung Jang | ... | investment executive |
