Question: What hit film did Lee Eun-ju star in besides one about a police detective who investigates a murder case?

Context paragraphs:
True Confessions (film): True Confessions is a 1981 crime film directed by Ulu Grosbard, The film stars Robert De Niro and Robert Duvall as the brothers Spellacy, a priest and police detective.  Produced by Chartoff-Winkler Productions, it adapted from the novel of the same name by John Gregory Dunne, and loosely based on the Black Dahlia murder case of 1947.  Dunne wrote the screenplay with his wife, novelist Joan Didion.

Look Back in Anger (TV series): Look Back in Anger () is a 2000 South Korean television series about two brothers' love for two women that aired on KBS2.  Starring Joo Jin-mo, Lee Min-woo, Park Jin-hee and Bae Doona, the cast also includes the following actors pre-stardom: Kim Myung-min, Uhm Tae-woong, Kim Min-hee and Lee Eun-ju.

Middle Finger Protests: Middle Finger Protests, also known as Human Rights Protection Group, is a Chandigarh-based human rights organization, protest group and NGO led by Prabhloch Singh.  The organization received its name from the protests during the Jessica Lal murder trial.  It is also the organization behind the protests in the Sippy Sidhu murder case and has been active in various protests, including the Jyoti murder case, Aarushi murder case and 2012 Delhi gang rape case.The group has flourished into an organization that has been challening societal ills, while showing immense courage under pressure.

Bungee Jumping of Their Own: Bungee Jumping of Their Own () is a 2001 South Korean film starring Lee Byung-hun and Lee Eun-ju.  The film had 947,000 admissions, making it the 10th most attended film of the year.

Damo (TV series): Damo (; lit.  "Female Detective Damo in the Joseon Dynasty"; also known as The Legendary Police Woman) is a 2003 South Korean fusion historical drama, starring Ha Ji-won, Lee Seo-jin, and Kim Min-joon.  Set in the Joseon Dynasty, it tells the story of Chae-ok, a "damo" relegated to the low-status job of a female police detective who investigates crimes involving women of the upper class.  It aired on MBC from July 28 to September 9, 2003 on Mondays and Tuesdays at 21:55 for 14 episodes.

Lee Eun-ju: Lee Eun-ju (22 December 1980 – February 22, 2005) was a South Korean actress.  She was the star of hit films including "Taegukgi" and "The Scarlet Letter".  She committed suicide at age 24.

The Penguin Pool Murder: The Penguin Pool Murder is a 1932 American pre-Code comedy/mystery film starring Edna May Oliver as Hildegarde Withers, a witness in a murder case at the New York Aquarium, with James Gleason as the police inspector in charge of the case, who investigates with her unwanted help, and Robert Armstrong as an attorney representing Mae Clarke, the wife of the victim.  Oliver's appearance was the first film appearance of the character of Hildegarde Withers, the schoolteacher and sleuth based on the character from the 1931 novel "The Penguin Pool Murder" by Stuart Palmer.  It is the first in a trilogy including "Murder on the Blackboard", and "Murder on a Honeymoon", in which Oliver and Gleason team up for the lead roles.

The Scarab Murder Case (film): The Scarab Murder Case is a 1936 film directed by Michael Hankinson.  It is part of a series of films about fictional detective Philo Vance.  Paramount Pictures intended for William Powell to portray the character, as he had in three prior Paramount films - "The Canary Murder Case" (1929), "The Greene Murder Case" (1929) and "The Benson Murder Case" (1930) - as well as "The Kennel Murder Case" (1933) for Warner Bros. However, Powell changed studios, and the role went to Wilfrid Hyde-White.

The Scarlet Letter (2004 film): The Scarlet Letter is a 2004 South Korean film about a police detective who investigates a murder case while struggling to hang onto his relationships with his wife and mistress.  It is the second film by "La Femis"-graduate and academic Byun Hyuk (Daniel H. Byun), and starred Han Suk-kyu, Lee Eun-ju, Sung Hyun-ah and Uhm Ji-won.  The film debuted as the closing film of the Pusan International Film Festival in 2004.  The film is based on novelist Kim Young-ha's short stories "A Meditation On Mirror" and "Photo Shop Murder".

Phoenix (2004 TV series): Phoenix (, lit.  Firebird) is a 2004 drama/romance South Korean television series starring Lee Seo-jin, Lee Eun-ju, Jung Hye-young and Eric Mun.  It aired on MBC from April 5 to June 29, 2004 on Mondays and Tuesdays at 21:55 for 26 episodes.

Supporting paragraphs: Lee Eun-ju The Scarlet Letter (2004 film)
Answer: Taegukgi