Existing law defines murder as the unlawful killing of a human being, or a fetus, with malice aforethought. Existing law also defines manslaughter as the unlawful killing of a human being without malice, and establishes 3 kinds of manslaughter: voluntary, involuntary, and vehicular.

This bill would require a law enforcement agency to review the casefile regarding an open unsolved homicide upon written application by certain persons to determine if a reinvestigation would result in probative investigative leads, as specified. The bill would define a homicide to include murder and manslaughter and an open unsolved homicide as a homicide committed after January 1, 1990, but no less than 3 years prior to the date of the application for case review, that was investigated by a law enforcement agency, for which all probative investigative leads have been exhausted and for which no suspect has been identified. If the review determines that a reinvestigation would result in probative investigative leads, this bill would require a reinvestigation, as specified. The bill would allow only one reinvestigation from being undertaken at any one time with respect to the same victim.