Movies like koma

Koma (Chinese: 救命) is a 2004 Hong Kong psychological thriller directed by Law Chi-Leung, starring Karena Lam and Angelica Lee.

The movie begins with a young woman, who attended a wedding party held in a hotel and became drunk, waking up in one of the hotel rooms; only to realize in horror that her kidney has been surgically removed. Socialite Ching (Angelica Lee), who also attended the party, identified Ling (Karena Lam) as the prime suspect because she found out that Ling was the only stranger presented in the ball room. She is unknown to everyone in the party, even to the hotel staff. During the police investigation, Ching discovers that Ling has been secretly involved with her boyfriend Wai (Andy Hui Chi-On), and this is the very reason why she was in the hotel when the crime was committed. Ling was released uncharged due to insufficient evidence as police believed Ching could be framing her for cheating with her boyfriend. Rather than quickly disappear, Ling starts stalking Ching, apparently jealous that Ching could have everything Ling wanted without an effort while Ling has to fight for it. Ching, at the beginning, sees that as a form of harassment, but soon twists it around and follows Ling instead. Ling seems accepting of this, showing her the darker side of life living as a poor girl compared to Ching's rich-girl background. The two engage in a subtle cat-and-mouse game, and Ching begins to fear for her life when Ling starts making threats to remove her kidney too.