Most people watched Making a Murderer over the course of a day or two. They didn’t sleep. They binged the episodes and then wrote letters about the injustice done to Brendan Dassey. Well, fans, get ready for another night or two without shuteye. The Keepers is your next obsession. The seven-part series delves into the murder of Sister Cathy Cesnik, a Baltimore Catholic school teacher who went missing on November 7, 1969 and was found dead a few days later. The case has never been solved. The docuseries looks into a potential massive cover-up that involves far more than the death of one nun. It hits Netflix on May 19.