From the epicenter of the Ebola outbreak, FRONTLINE follows health officials tracking the deadly disease and trying to stop its rampant spread. With special access to teams fighting Ebola in Sierra Leone, the film shows how the outbreak is endangering health- care workers, overwhelming hospitals and getting worse. Also this hour, FRONTLINE investigates accounts that members of the Nigerian military have been committing atrocities in the fight against Boko Haram - the Islamist militants who kidnapped nearly 300 schoolgirls in April. Amid worldwide pressure to find the girls, FRONTLINE uncovers shocking videos showing arrests, torture and summary executions of alleged Boko Haram suspects.