Thread of Lies (; lit.
 Elegant Lies) is a 2014 South Korean film based on the 2009 bestselling novel "Elegant Lies" by Kim Ryeo-ryeong.
 Directed by Lee Han, it starred Kim Hee-ae (in her first film in 21 years), Go Ah-sung, Kim Hyang-gi and Kim Yoo-jung.
Coin Locker Girl (; lit.
 Chinatown) is a 2015 South Korean film written and directed by Han Jun-hee, starring Kim Hye-soo, Kim Go-eun, Uhm Tae-goo with Park Bo-gum and Go Kyung-pyo.
 It was selected to screen in the International Critics' Week section of the 2015 Cannes Film Festival.
Monster () is a 2014 South Korean thriller film written and directed by Hwang In-ho, starring Lee Min-ki and Kim Go-eun.
Kim Go-eun (Korean: 김고은 ), known by her stage name of 별 (Byul, "star"), is a South Korean singer.
Spellbound (; lit.
 "Chilling Romance") is a 2011 South Korean horror romantic comedy film, starring Son Ye-jin and Lee Min-ki.
 It is about a magician who falls in love with a woman who can see ghosts.
 It was written and directed by Hwang In-ho which also marks his directorial debut.
Cheese in the Trap () is a South Korean television series starring Park Hae-jin, Kim Go-eun, Seo Kang-joon and Lee Sung-kyung.
 It aired on the cable network tvN on Mondays and Tuesdays for 16 episodes between 4 January–1 March 2016.
 The series is based on the webtoon of the same name, serialized on Naver from 2010–2016, although it featured an original ending since the webtoon had not been completed at the time of filming.
Hwang In-ho is a South Korean film director and screenwriter.
 He wrote and directed the horror-romantic comedy "Spellbound" (2011) and the crime thriller "Monster" (2014).
Guardian: The Lonely and Great God (), known internationally as simply Goblin, is a South Korean television series starring Gong Yoo, Kim Go-eun, Lee Dong-wook, Yoo In-na, and Yook Sung-jae.
 It aired on cable network tvN every Friday and Saturday at 20:00 starting December 2, 2016 until January 21, 2017.
Canola (; lit.
 Grandmother Gye-choon) is a 2016 South Korean film starring Youn Yuh-jung, Kim Go-eun and Choi Min-ho.
Kim Go-eun (born July 2, 1991) is a South Korean actress.
 She debuted in the critically acclaimed film "A Muse" (2012) where she won several Best New Actress awards in South Korea.
 She next appeared in the crime thrillers "Monster" (2014), "Coin Locker Girl" (2015) and "Memories of the Sword" (2015).
 Kim then extended her filmography to television where she played leading roles in the tvN dramas "Cheese in the Trap" (2016) and "" (2016-2017).

Question: What South Korean film written by Hwang In-ho starred Kim Go-eun?
Answer: Monster