Bonus - 10 Hitmen You’ve Probably Never Heard Of

Most of us have heard the horrific tales of hired guns like Richard “The Iceman” Kuklinski and Sammy “The Bull” Gravano. However, history has provided us with a slew of bloodthirsty evildoers who have slipped through the cracks. Here are 10 of the most prolific, unusual, and sometimes unassuming contract killers the last century has produced.