Are there other worldly monsters, people, beings, creations, and such looming about? Maybe this can answer the question for you. Just relax in your everyday life, and when you see that something dart across you visual space, go after it. When that something nears the corner of your eye but it's not there, seek it out. There is something about the world; be it speculated, or trapped in the mind of someone trapped in a padded room. The truth has always been there. We just have to look to the corner of our imagination to finally see what's been seeing us.