What could this dream mean? And a BQ too but I don't have enough space to explain...?

Ok so last night I had a dream that my friend was a serial killer and I had to help her cover up all her murders. And I had evidence on my phone for some reason and my dad found it and told the cops. Then I was getting chased by the cops and I ended up in an airplane and I was hiding. And then I was at my elementary school and all the kids were going inside so me and Ariel (the "serial killer" in my dream) snuck in with the kids and then we ended up in the gym and eventually the cops found us and I said I did it and then pleaded insanity and then I woke up. So any ideas what this could mean? I've been having some mental issues lately ... Like depression and schizophrenia. I think I'm criminally insane too. Or I'm going to be maybe. Because I always think about killing people and I love watching people die in movies and reading and learning about serial killers and I especially love looking at crime scene photos and pictures of their victims. But I don't WANT to kill anyone ... Yet. I just think about WHAT IF I did. How would I do it; where would I put the body; how I would cover it up; etc. And when I'm mad at someone, I find myself drawing pictures of me killing them. And I'm always smiling in the pictures. So I don't know what this dream could be about or if it has anything to do with my mental disorders. BQ - Could I be/become criminally insane? Because I really don't want to be but I think I might me and if I am I'm going to make an appointment with a psychiatrist or even go to Jones (my local mental hospital) and try to prevent it as much as possible. So thanks a lot guys :)