Insidious is....

      
...some good scares at the beginning of the movie that regrettably don't hold in its second part.

Where is Zelda Rubinstein when you need her?

The movie's premise is a haunting, but with the twist that it occurs not to a house but to a boy.  The first few scares are really good, but once Barbara Hershey enters the picture, it goes downhill.  It has nothing to do with Ms. Hershey, but with an evident lack of focus.  On this same note, the make-up and special effects are sub-par, causing the viewer to get out of the movie.  It tries to be a modern day Poltergeist, but that picture is leap and bounds better than Insidious.  

Four out of ten stars.