Hi everyone, I'm trying to find the title of a film I saw several times in the 1980's/early 1990's when I was very young. My memories are only very vague. I remember it was about a boy who had nightmare or visions of a ghost or creature of some sort. I think he was able to traval through a green mist in his basement to defeat it or something like that. I also recall a scene where he received a key from the mouth of a puppet or something similar. I know it's not much to go on, but if anyone can help I would be glad to hear from you.