He obsessed over the police interrogation for years, tormenting himself with questions he could not answer.

“How could you be so stupid?” Tyler Edmonds asked himself. “Why would you do that?”

Edmonds was 13 when he told detectives he helped his half-sister shoot her husband in his sleep ─ a story he says she concocted to skirt blame. He spent four years behind bars before his murder conviction was overturned and a second jury acquitted him. He went to therapy, and studied why children admit to crimes they didn’t commit. He began to understand what he’d done.

“I think the answer is that you’re young and you don’t know any better,” Edmonds, now 27, said.

He has rebuilt his life in many ways. But he is still paying for that confession.

After Mississippi passed a law allowing exonerees to seek compensation, Edmonds sought a payout…