Richard Leonard "The Iceman" Kuklinski (April 11, 1935 -- March 5, 2006) was an American mobster and contract killer. The six foot five inch (196 cm), 300 pound (135 kg) Kuklinski worked for Newark's DeCavalcante crime family and New York City's Five Families. He claimed to have murdered over 250 men between 1948 and 1986. He claimed to have committed his first murder at the age of 13. He was the older brother of convicted child-rapist and murderer Joseph Kuklinski. Richard Kuklinski spent the last years of his freedom living with his wife and three children in suburban Dumont, New Jersey.