It’s time to unveil the latest round of additions to the 4xblu online store, which consists of the newly-arrived “Psycho” by Gus Van Sant, Richard Fleischer’s “The Boston Strangler,” and Douglas Sirk’s “The Tarnished Angels.” Based on William Faulkner’s novel “Pylon,” “The Tarnished Angels” is said to be regarded by the author as the best screen adaptation of his writing, and Sirk himself said that “perhaps, after all, Tarnished Angels is my best film.”