Summary When four members of the same family are shot to death at home, police turn to the only surviving member for help. He is convinced that his sister, who had a long-standing history of mental health issues, is responsible. But much of the evidence doesn't support his story. And when a wealthy businessman is gunned down outside his apartment, suspicion turns quickly to his estranged wife. But there's no evidence connecting her to the crime, until two years later when an informant comes forward with some explosive information.

• Crime