“Slingshot” (** out of four) was a muffled suspense melodrama about an astronaut (Casey Affleck) who struggles to maintain his sanity aboard a space shuttle with other space travelers (Laurence Fishburne and Emily Beecham) on a trip to Saturn’s moon Titan as he finds himself gradually losing his grip on reality. Well-acted and stylish but hollow and hokey and never sufficiently delivers as a thriller or as a human drama. Fishburne seems to be more-or-less playing Morpheus all over again here. This sat on the shelf for 2 years after completion.