Nightmares exist outside of logic, and there's little fun to be had in explanations; they're antithetical to the poetry of fear.
The monster nevers dies.
Friends come in and out of our lives, like busboys in a restaurant.
We lie best when we lie to ourselves.
When a man has died, he wants you to know about it.
If you're going into a very dark place, then you should take a bright light, and shine it on everything. If you don't want to see, why in God's name would you dare the dark at all?