Article continues below advertisementJeffrey Epstein's brother is again challenging the narrative that the late predator committed suicide in his Manhattan jail cell.Speaking during the March 25 episode of "Crime Stories With Nancy Grace," Mark Epstein insisted his brother did not end his own life in August 2019. "It was not a suicide," he told the Closing Arguments star, 66. "If you go back in time, when Jeffrey was first autopsied the day after they found his body, the initial death certificate said on the cause of death pending further study.