Donate now to support Reveal’s journalism. ••• Special Agent Joel Wallace of the Mississippi Bureau of Investigation was called in to investigate the death of Billey Joe Johnson. He worked alongside two investigators from the George County district attorney’s office. Wallace said that arrangement didn’t happen very often. And he now questions why they were assigned. “If you've got me investigating the case, then I’m an independent investigator,” he said. “But why would I need the district attorney investigator to oversee me investigating a case?” The Johnsons were initially relieved, because Wallace had experience investigating suspicious deaths. As a Black detective, he had dealt with racist backlash to his work. Reveal host Al Letson and reporter Jonathan Jones visit Wallace, now retired, to talk about what happened with the investigation. When Wallace finds out what Reveal has uncovered, he begins to wonder whether the case should be reopened.