Question: Park Sung-woong (born January 9, 1973) is a South Korean actor, Park has starred as a serial killer in "The Deal", a (2015) South Korean crime thriller film directed by who?

Context paragraphs:
Tabloid Truth: Tabloid Truth (; lit.  "Leaflet: Dangerous Rumors") is a 2014 South Korean thriller film directed by Kim Kwang-sik, and starring Kim Kang-woo, Jung Jin-young, Ko Chang-seok and Park Sung-woong.

The Deal (2015 film): The Deal (; lit.  "Murder Request") is a 2015 South Korean crime thriller film directed by Son Yong-ho.

Park Sung-woong: Park Sung-woong (born January 9, 1973) is a South Korean actor.  Following his acting debut in "No. 3" in 1997, Park has starred in several movies and television series, notably as a gangster in "New World" (2013) and a serial killer in "The Deal" (2015).

The Swindlers (2017 film): The Swindlers is an upcoming South Korean crime drama film directed by Jang Chang-won.  The film stars Hyun Bin, Yoo Ji-tae, Bae Seong-woo, Park Sung-woong, Nana and Ahn Se-ha.

Seven Days (film): Seven Days () is a 2007 South Korean crime thriller film directed by Won Shin-yun, starring Yunjin Kim and Park Hee-soon.

Rainbow Eyes: Rainbow Eyes () is a 2007 South Korean crime thriller film directed by Yang Yun-ho.  The story follows a police inspector who discovers that his friend is now a serial killer.The movie was remade into a thailand thriller named 'Cheun'.

A Violent Prosecutor: A Violent Prosecutor is a 2016 South Korean crime film directed by Lee Il-hyung, produced by Guk Su Ran and starring Hwang Jung-min, Kang Dong-won, Lee Sung-min and Park Sung-woong.  It was released in South Korea on February 3, 2016 by Showbox.

Ha Jung-woo: Ha Jung-woo (born Kim Sung-hoon on March 11, 1978) is a South Korean actor, film director, screenwriter and film producer.  His breakthrough to stardom came with the role in Na Hong-jin's serial killer film "The Chaser" (2008).  One of the leading actors of his generation in Korean cinema, Ha Jung-woo showcased his versatility across movies from many genres: road movie "My Dear Enemy" (2008), sports film "Take Off" (2009), crime drama "The Yellow Sea" (2010), gangster saga "" (2012), romantic comedy "Love Fiction" (2012), spy thriller "The Berlin File" (2013), and action thriller "The Terror Live" (2013).  He made his directorial debut through the comedy film "Fasten Your Seatbelt" (2013), followed by "Chronicle of a Blood Merchant" (2015).

Park Hae-il: Park Hae-il (born January 26, 1977) is a South Korean actor.  He began his acting career in theater, but soon gained the film industry's attention in 2003 with "Jealousy Is My Middle Name" and "Memories of Murder".  Park's film career took off, with leading roles in films of diverse genres, including relationship drama "Rules of Dating" (2005), horror mystery "Paradise Murdered" (2007), and crime thriller "Moss" (2010).  More recently, Park received Best Actor honors for his performance in the period action film "War of the Arrows", which was the highest-grossing Korean film of 2011.  He also received critical acclaim for his role as an aging poet in "A Muse" (2012).

Monster (2017 film): Monster is an upcoming South Korean period thriller film directed by Heo Jong-ho.  It stars Kim Myung-min, Park Hee-soon, Lee Geung-young, Choi Woo-shik, Park Sung-woong, Kim In-kwon and Lee Hye-ri.

Supporting paragraphs: Park Sung-woong The Deal (2015 film)
Answer: Son Yong-ho