The Keepers is a haunting 2017 documentary series that investigates the unsolved murder of Sister Cathy Cesnik, a beloved nun and teacher in Baltimore. The series uncovers a web of abuse, corruption, and cover-ups within the Catholic Church and local institutions, as former students and journalists seek justice for Sister Cathy and other victims. Through powerful interviews and meticulous research, it sheds light on systemic issues and the resilience of those fighting for the truth.