Decent One

It is sort of like watching Hell’s production of A.R. Gurney’s “Love Letters,” because its correspondents have certainly earned damnation. Utilizing a cache of previously unseen letters and documents written by Heinrich Himmler and his family, documentarian Vanessa Lapa paints an uncomfortably intimate portrait of the Holocaust architect. Himmler proves just how banal evil can be in “The Decent One.”