I SAW THE DEVIL (2010)
A secret agent exacts revenge on a serial killer through a series of captures and releases.
LADY VENGEANCE (2005)
After being wrongfully imprisoned for 13 years and having her child taken away from her, a woman seeks revenge through increasingly brutal means.
OLDBOY (2003)
After being kidnapped and imprisoned for 15 years, Oh Dae-Su is released, only to find that he must find his captor in five days.