Escape to Reality

How do you know when you’re in the dream world and when you’re in reality? You can feel a real sense of horror without any realisation that your situation hasn’t actually happened and that you can wake up still worrying about it before realising that your incident hasn’t occurred and that you’ve merged into another world. Sometimes you know straight away that you’re dreaming and expect to wake up any second to escape to reality. The situation just gets too far-fetched. But what if the people of the dream world have the ability to cross over into the real world? Actual characters who have the potential to visit you while you’re sleeping and during the day as well? Creatures that wouldn’t normally exist, or simply those that others can’t see? Or is that just everyone else anyway? Giving too much power to the imagination can distort what you do in reality.