Unraveled: Once a Killer

Hosts Billy Jensen and Alexis Linkletter investigate the one-and-done-killers phenomenon and discuss how DNA genealogy plays a significant part in solving decades-old cold cases. Hosts Billy Jensen and Alexis Linkletter investigate the one-and-done-killers phenomenon and discuss how DNA genealogy plays a significant part in solving decades-old cold cases. Hosts Billy Jensen and Alexis Linkletter investigate the one-and-done-killers phenomenon and discuss how DNA genealogy plays a significant part in solving decades-old cold cases. Hosts Billy Jensen and Alexis Linkletter investigate the one-and-done-killers phenomenon and discuss how DNA genealogy plays a significant part in solving decades-old cold cases.