12 Horrifying Serial Killers & 1 Mass Murder | True Crime Documentary
5 cases of Mass Murderers | Compilation (Two and a Half Hours)
The Thanksgiving Mass Murder That Shocked The World! (True Crime Documentary)
Insanity Exclusive and Dr Insanity
Mom Discovers Her 15 Year Old Son Is A Mass Killer
Detective Is SHOCKED By Mass Murderer's Confession
This Is The Difference Between A Serial Killer And Mass Murderer
Mom Realizes Her Son is a Mass Killer
The Terrible Torture Killings of Mass Murderer Richard Speck (Full Documentary)
Husband Discovers His Wife Is A Mass Killer
Small Town Baker Becomes Worst Mass Murderer in Alaska's History | First Blood | A&E
3 Serial Killers Who Also Committed Mass Murders
Reddit Hunts a Mass Murderer Before He Kills Again
Mass Murderer Escaped Police For Over 18 Years, Lives Secret Life | Almost Unsolved - Busted
Cop Realizes He's Talking To A Mass Murderer
Cops Mistake Mass Killer for Prankster
Female Mass Murderers - Major Cases and Motives
Chronic Law - Mass Murder (Official Audio)
The Mass Murders That Set The Stage for Hitler
Classmates Realize They're Trapped With a Mass Killer
