After the success of Making a Murderer, Netflix is continuing to provide a steady drip of true crime docs with Casting JonBenet set to drop next week and now a new documentary series coming in May called The Keepers. The series revolves around the investigation into the unsolved murder of a Baltimore Catholic school teacher who disappeared back in 1969, possibly to stop her from exposing a dark secret about the school’s chaplain. Directed by Ryan White (Good Ol’ Freda, The Case Against 8), it features extensive interviews with former friends, co-workers, relatives and journalists, all of whom are determined to finally get to the truth. The seven-part series premieres on May 19th; check out the trailer after the jump and see what you think.