The Indiana Court of Appeals ruled last week that a Franklin County court should consider David Ison's 2015 petition, which argues Ison had ineffective counsel and questions whether his guilty plea was voluntary.
Indiana man convicted of killing 5 people wins appeal →
"We stood in the parking lot and watched it coming," said David Ison, who raced into a bank vault with nine others to seek safety. "By the time it hit, it was like a whiteout."
Stories of survival emerge from tornado victims →