“Insidious” grabs the viewer by getting at one of our greatest fears: A child is sick, in a coma, and no one knows why. The family just moved into a new house, and there are unusual things about this new residence, like weird sounds emanating from unknown sources. A villainous person appears, but only the wife sees him, creating tensions between the husband who doesn’t see the creature and a scared wife. This movie gets a bit intense for those easily scared. It has some terrifying scenes which are signs of a good horror movie. It is noted that the late Tiny Tim probably never realized his tulips songs could be the source of immense terror. If one likes to be frightened, all through the story, this is a movie for you.