Sorry to heave up a necro thread, but I'd watched the documentary a few months ago. It's so damn heartbreaking that we'll probably never know what really happened to Sister Cathy and Joyce Malecki, but thank goodness that Gemma and Abbie are still trying to actively backtrack investigate both murders. It was also heartbreaking that so many women had suffered abuse at the hands of the priests at Keough, and that Sister Russell is no longer alive (I think that she knew more than she told, same with Koob). I had to have a frustrating cry about the whole documentary after binge watching it. As an abuse survivor myself, I felt so much sympathy for the victims in the whole thing and it was so disheartening to watch the response of the D.A. as well. So infuriating.
Overall though, the documentary meandered a bit but it was otherwise very well done. I hope that a follow up to The Keepers is made in the future, if new evidence is brought to light.