Murderous Minds: Inside Serial Killers Season 4 Episode 9 The SCARIEST Hitman on Earth

A lot of the killers we feature in this series have been defined by their upbringing and no more so than Richard Kuklinski. There has always been some debate about whether Richard was a serial killer or a hitman, however as you'll see in this documentary there really is no difference, the end result is cutting short multiple human lives.