In 1967, story Ennis confessed to Jack about the actual cause of his gut cramps in 1963:
"That summer," said Ennis. "When we split up after we got paid out I had gut cramps so bad I pulled over and tried to puke, thought I ate somethin bad at that place in Dubois. Took me about a year a figure out it was that I shouldn't a let you out a my sights. Too late then by a long, long while."