One day, Samantha Sims, a lawyer in Los Angeles, received a phone call from her ex-boyfriend Brad Mortensen, and her sister Brenda Sims was caught in a murder. Brenda met Trevor Smith, a computer technologist, at a party, and the two quickly fell in love. Brenda found that her boyfriend had a family and Brenda wanted to end it, but Trevor was mysteriously murdered. All the evidence points to Brenda.