“Unsane” (** out of four) was an unwieldy psychodrama about a young woman (Claire Foy) about a young woman whose involuntarily committed to a mental institution where she encounters strange occurrences with both the staff and workers. Are they real or is she losing her mind? Spooky and atmospheric for a while but story becomes too cerebral and unpleasant in the second half and starts to lose focus. Director Steven Soderbergh’s first horror movie and probably his last. Not all that different in story and structure from Clint Eastwood’s “The Changeling.”