Question: What 2010 horror film did Seo Young-hee star in alongside Ji Sung-won?

Context paragraphs:
Bedevilled (2010 film): Bedevilled (; lit.  "The Whole Story of the Kim Bok-nam Murder Case") is a 2010 South Korean horror/thriller film starring Seo Young-hee and Ji Sung-won.  The film premiered as an official selection of International Critics' Week at the 2010 Cannes Film Festival.

A Thousand Kisses (TV series): A Thousand Kisses () is a 2011 South Korean television series, starring Seo Young-hee, Ji Hyun-woo, Ryu Jin and Kim So-eun.  It explores the question of age differences in romance.  It aired on MBC from August 20, 2011 to February 5, 2012 on Saturdays and Sundays at 20:40 for 50 episodes.

Spiderhole (film): Spiderhole is a 2010 horror film written and directed by Daniel Simpson.  The film is Simpson's feature film directorial debut and is distributed by IFC.

Ubaldo Terzani Horror Show: Ubaldo Terzani Horror Show is a 2010 horror film written and directed by Gabriele Albanesi and starring Paolo Sassanelli and Giuseppe Soleri.

Now and Forever (2006 film): Now and Forever () is a 2006 South Korean film directed by Kim Seong-joong and starring Choi Ji-woo, Jo Han-sun, Choi Sung-kook and Seo Young-hee. it also has a Japanese manga named RENRI NO EDA (連理の枝) Intertwined Branches .

Seo Young-hee: Seo Young-hee is a South Korean actress.  She is best known for her supporting role in thriller "The Chaser" (2008) and her award-winning lead role in horror film "Bedevilled" (2010).

Terror Trap: Terror Trap (stylized in some countries as Vacancy 3), is an American 2010 horror film, written and directed by the controversial Dan Garcia who pleaded guilty in 2013 to a Motion Picture Tax Scam after orchestrating a scheme to defraud the State of Louisiana’s Motion Picture Industry Development Tax Credit Program.  At the time of this update Garcia has not been sentenced.  Filming took place in Louisiana.  The film stars David James Elliott, Michael Madsen and Jeff Fahey.  Movie tagline is "Once you check in, there's no escape...".  The film is similar to the 2008 film, "Vacancy" which also features a couple being terrorized by a motel's owner and his employees while being recorded.

Hwang Geum-hee: Hwang Geum-hee (born August 20, 1977) is a South Korean actress.  Previously known by her stage name Ji Sung-won, Hwang began using her real name professionally in August 2013.  Her most notable work is the critically acclaimed horror film "Bedevilled" (2010).

Star Vehicle (film): Star Vehicle (re-titled in North America as Bleading Lady) is a 2010 horror film directed by Ryan Nicholson and starring Dan Ellis, Sindy Faraguna, Nathan Durec and Nick Windebank.

Freeway Killer (film): Freeway Killer is a 2010 horror film directed by John Morlowski and written by David Birke starring Scott Anthony Leet, Cole Williams, Dusty Sorg, Michael Rooker, Debbon Ayer, and Eileen Dietz.  The film is based on true events and follows the story of serial killer William Bonin, one of three killers who claimed several victims on the freeways of California in the 1970s and 1980s.  The film was released by Image Entertainment on February 16, 2010.

Supporting paragraphs: Seo Young-hee Bedevilled (2010 film)
Answer: Bedevilled