Mine would definitely be of some psycho killer in a mask staring into my house through the windows. Creeps me the hell out. I rarely get nightmares, but those particular ones I usually get after I've been reading or watching some true crime stuff or after watching a movie based on real life killers. Thing is, I find true crime fascinating, yet scary at the same time, LOL. Spiders, insects and snakes don't really scare me and I don't believe in ghosts, but psycho killers coming after me? (Shudders.)