Some of the most haunting serial killer cases in Florida have never been solved. Since the 1970s, investigators have documented clusters of murders across the state with troubling similarities: the same victim profiles, the same methods, and the same remote roadsides and canals. In several cases, detectives suspected a serial offender. The Florida Sheriffs Association is highlighting unresolved serial killer cold cases by utilizing modern forensic tools like DNA analysis and genetic genealogy. The Cold Case Advisory Commission meets quarterly to review stubborn homicide files with multi-agency experts. This week we take a look at some Florida serial killer cases that have remained open for decades.