Richard Kuklinski, also known as the "Ice Man," earned this nickname for freezing his victims in order to confuse the time of death to investigators. On the outside, Kuklinksi looked like a normal businessman to his neighbors. He was married with three children and began killing as a teenager. It has been estimated that he's killed between 100 to 250 men, but had a personal rule never to kill a woman or child. Kuklinski's killing methods got the attention of the Gambino Family. The Gambinos put him to work, and he was a contract killer for many years. He died in prison of natural causes.