Texas executed its fifth teenage offender at 22 minutes after midnight on Aug. 24, 1993, after his last request for bubble gum had been refused and his final claim of innocence had been forever silenced.
Ruben Cantu, 17 at the time of his crime, had no previous convictions, but a San Antonio prosecutor had branded him a violent thief, gang member and murderer who ruthlessly shot one victim nine times with a rifle before emptying at least nine more rounds into the only eyewitness -- a man who barely survived to testify.
Four days after a Bexar County jury delivered its verdict, Cantu wrote this letter to the residents of San Antonio: "My name is Ruben M. Cantu and I am only 18 years old. I got to the 9th grade and I have been framed in a capital murder case."
A dozen years after his execution, a Houston Chronicle investigation suggests that Cantu, a former special-ed student who grew up in a tough neighborhood on the south side of San Antonio, was likely telling the truth.