Here's why:
* Violence: The movies contain intense horror, including some graphic violence, blood, and gore.
* Language: There's some strong language used throughout the films.
* Frightening/Intense Scenes: The movies are designed to scare audiences with jump scares, disturbing imagery, and suspenseful scenes.
So, if you're looking for a scary movie, Insidious definitely fits the bill. But, it's not recommended for younger viewers.