On this day, Oct. 31, in 1974, Ronald O'Bryan fatally poisoned his 8-year-old son, Timothy, by giving him trick-or-treat candy spiked with cyanide.

Timothy poured powdered sweetener from a Pixy Stix straw into his mouth and complained that it tasted bitter.

O'Bryan gave him some Kool-Aid to wash the taste out.

Houston-area detectives quickly combed the neighborhood, recovering four other Pixy Stix. One straw was still clutched in the hand of a child who'd fallen asleep after failing to open the straw, which had been stapled shut. Two inches of each straw had been packed with a deadly dose of cyanide.

Bryan became known as "The Man Who Killed Halloween" and was sentenced to death. Fellow inmates dubbed him "The Candyman."

He was executed by lethal injection in 1984.

- Scott McCabe