300,000 VOLTS OF HORROR! Lieutenant Dick Chasen (Casey Adams) narrates - in the serious tone of a "Dragnet" episode - the riveting tale of Charles "Butcher" Benton (Lon Chaney). As he sits on death row, Benton refuses to tell his dishonest lawyer, Lowe, where he hid the $600,000 he stole during a bank robbery. Instead, he sends a map detailing the location of the money to his stripper girlfriend, Eva Martin (Marian Carr). Lowe intercepts the letter and steals the map. "The Butcher" vows revenge on Lowe and all his cronies. After his execution, Benton's body is taken to the laboratory of Dr. Bradshaw, whose experiments to find the cure for cancer accidentally bring Benton back to life - only now he's indestructible!

"Butcher" Benton (Lon Chaney Jr.) is executed in the electric chair, but a scientist's experiments revive him as an unstoppable killer, impervious to bullets or other weapons. He proceeds to search for his former crime partners, to pay them back for selling him out.