“The Twin” (*1/2 out of four) was a drably done horror film about a grieving mother (Teresa Palmer) whose son was just recently killed who goes with her husband and surviving son (Steven Cree and Tristan Ruggieri) on a trip to Finland in which they all soon begin to get creepy notions that the other son may not be dead after all. Basically “The Shining” mixed with some of “The Sixth Sense” and also a little of “Midsommar” but it all makes for a very dull brew. Palmer, Cree, and co-star Barbara Marten all previously worked together on “A Discovery Of Witches” but they all may want to start discovering some better scripts sometime soon.