I don’t know what I thought of “Open Water 2” in the end. I mean everyone knows by now that it’s not technically a sequel, just another movie that was branded “Open Water 2” but it makes its connection to the first film pretty much incidentally. As “Adrift” this is a hellish and grueling thriller that’s reliant of course on paranoia, elemental danger, and being marooned in an area with no hope of rescue or miracles. I’m a huge fan of the original movie “Open Water,” which is one of the most underrated and excruciating experiences ripped from the headlines that translated well. “Adrift” is along the same themes involving a group of friends who go yachting and find themselves in the middle of the ocean stuck in the water after forgetting to pull down the ladder on the boat. As the hours wage on, character Amy’s newborn daughter is still aboard starving and suffering from the heat, and now the folks have to find a way to get on the boat before she dies.