Unraveled Once a Killer. Word Search Puzzle Solver. Unraveled Once a Killer word Search Puzzle Game. Find words related to movie actors, actresses, and genres. Word Search Puzzle Solver. 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. This includes identifying and searching for words that are related to : Documentary, Alexis Linkletter, Billy Jensen .