Charles "Carl" Panzram (June 28, 1891 – September 5, 1930) was an American serial killer, spree killer, mass murderer, rapist, child molester, arsonist, robber, thief, and burglar. In prison confessions and in his autobiography, Panzram confessed to having murdered twenty-one boys and men, only five of which could be corroborated; he is suspected of having killed more than a hundred boys and men in the United States alone, and several more in Portuguese Angola. Wikipedia