Creates the Homicide Victims' Families' Rights Act. Provides for the review of the case file of open unresolved murders. Defines "open unresolved murder" as any criminal activity in which death occurred more than 3 years prior to the date of the application for review of the case file under the Act, for which all probative investigative leads have been exhausted, and for which no likely perpetrator has been identified. Provides that the person or persons performing the review shall not have previously investigated the murder. Provides that only one case review shall be undertaken at any one time with respect to the same murder victim. Provides that each law enforcement agency shall develop a written application to be used for persons to request a case file review. Provides that the applicable agency shall conduct a full reinvestigation of the murder if the review of the case file concludes that a full reinvestigation of the murder would result in probative investigative leads. Provides for the compilation and publication of specified information and statistics regarding open unresolved murders by the Illinois Criminal Justice Information Authority. Provides that each law enforcement agency shall employ or designate a minimum number of family liaison officers proportionate to the average number of homicides in the agency's jurisdiction within the previous 5 years of the date of employment with the maximum ratio of 40 homicides per each family liaison officer employed. Each agency may establish a lower ratio for hiring of family liaison officers. Establishes the duties and training for family liaison officers. Amends the Illinois Criminal Justice Information Act to make conforming changes.