"Insidious" is honestly one of the most terrifying movies ever. There's no sexual content, no alcohol or drug use/references, nor is there any offensive language. Parents, you're covered... well, maybe. As you might expect from a horror film, there are scenes of terror, violence, disturbing images, and unsettling events. This film in particular really gets under your skin (at least, that was the case when I saw the movie). There's no blood or gore, or any real fatalities. It's not a slasher film like "Friday the 13th." No, instead "Insidious" is grounded in the supernatural, the paranormal, which makes it all the more horrifying, actually. The film is more psychological in nature than anything else, and it's the subtleties in the music and the overall atmosphere of suspense and helplessness that amps up the scare factor here. Although "Insidious" is no doubt a great cinematic experience, impressionable children in particular MUST stay away from this film. The movie might even be too much for your average adolescent. I say this movie is 14+, yet even that is stretching it a little bit. I will warn you that there are a number of jump scares used throughout the movie, some of them showcasing a real threat while others are just "fake" jump scenes. As well, the last twenty minutes of the movie are probably the weirdest and scariest twenty minutes ever, and also I would advise you to look out for the infamous jump scene featuring the Red Demon in the kitchen.