the summer day that both nick sampson and matt livers were innocent, despite what matt told police during his interrogation. >> it was just screaming to me false confession. there was every indication in there that there was a problem. >> reporter: what made it look like a false confession? >> as reports start coming in, we start learning that none of the details that matt provides are accurate. >> reporter: something else investigators may not have understood but perhaps should have. matt livers, as his friends and family knew very well was slow. he had a low i.q., at least the sort of i.q. people can measure. in a conversation with authority figures under pressure, matt livers was prone to being led. he was gullible. >> there was a portion of the questioning where they won't let him finish his sentence. they're belittling him. they're screaming at him. they're threatening him with the death penalty. >> reporter: and he believed them when they said those things.