If you have watched Insidious 1, you wouldn't be disappointed with Insidious Chapter 2. They have connected the story so well but still I just couldn't understand how come Elder John and Kid John could be seen together. The movie definitely reveals that but that doesn't make any sense to me.
One of best dialogues from this movie - "Don't You Dare..." The way that woman tells this and slap the people. I just love that. Learning wise, there's one valuable lesson in this movie. If there's a bad spirit in this world, then there's also good spirit to help you out.