For those of you who are parents, whenever any of your kids are scared in the middle of the night, claiming there is something or someone under their bed or in their closet, just do what I did:
First get the child a glass of water, to take their mind off the issue.
Then, tell a completely unrelated story--a fairy tale or perhaps a tale of when you were a kid their same age.
Then, tell the same story, slightly differently, so they get bored enough to start falling asleep again as you're talking.
Finally, ask if that made things better in helping them forget all about that monster under the bed.
From one parent to another.