Insidious the last key is based on Elise Rainier life how she struggled in her to become exorcist. The movie cover 5 capter it’s not like if you don’t watch one of them you won’t understand but if you will watch from the starting you will get better grasp about characters and their journey so insidious last key is a third movie that cover elise life when she was child her dad was thought that she are acting that she can see Ghost but she can actually she that but her beat her so hard, her beat her and her brother once they grown up one day Elise just left the home without his brother but turn out that elise father was just a victim the main thing behind is spirit eho were controlling him that spirit even controlled her brother’s daughter so she has to stop him so she entered in Red Door?? to save her when Elise entered in Red door that tried to take control over her to but eventually she save all of them and found the truth about her family how that spirit control him it’s not his fault that he was like that. It’s really great movie with full of suspense thriller movie ??