Oldboy 2003

With no clue how he came to be imprisoned, drugged and tortured for 15 years, a desperate businessman seeks revenge on his captors.

Spoilers for Oldboy

Submitted by: aberen

Mido is his daughter. Gross!

Submitted by: rudethe3

Dae-su Oh found out that the girl(Mi-Do) he had sex with was his daughter

Submitted by: rudethe3

Lee Woo-jin shot himself in the elevator at the end.