Jorge del Carmen Valenzuela Torres (23 August 1938 – 30 April 1963), popularly known as "El Chacal de Nahueltoro" (The Jackal of Nahueltoro),[1] was a Chilean farmer and mass murderer who killed his partner and his five stepchildren in what the Investigations Police of Chile has called one of the most important crimes of twentieth century Chile.

At one point Valenzuela had been living in a house in the commune of Nahueltoro in the Ñuble Province assigned to widow Rosa Elena Rivas Acuña, aged 38, with her and the five children she had from a previous marriage to Óscar Armando Sánchez (who had died several months earlier).

Several days later, Exequiel "Quelo" Dinamarca, a local landlord, found the bodies of the six victims and informed the Carabineros de Chile.

[6] A month later, he was spotted in the sector or General Cruz in the commune of Pemuco, where two locals trapped him in a sack while he was in a state of sobriety and turned him over to police.

After being arrested and imprisoned Valenzuela repented, became literate, became a stronger Catholic (with the guidance of the prison priest, Eloy Parra), and learned the trade of guitar-making.