Keka (2003)

Keka loses the love of her life to a violent fraternity ambush. She despairs of ever finding happiness again until, years later, she decides to ease her pain by killing off the frat boys, one by one. They escaped justice due to their parents’ connections, and they have all gone on to successful careers, particularly the ringleader, Bobby, who is a heartthrob soap actor. Keka calls on her boyfriend’s old frat brother,Bhong, who gets her a gun, mistakenly thinking she won’t go through with her plan. Meanwhile, Jason, the cop assigned to the murder investigation, finds himself falling for Keka, unaware that she’s his number one suspect. As the bodies pile up, Keka is torn between her love for the straight-laced cop and the growing sense of satisfaction she gets from killing those who destroyed her life. Eventually, both Bobby and Jason realize that the killings are connected and immediately begin to suspect Bhong. (Source: Rotten Tomatoes)