Horror fans--Please help me figure out the name of a movie!
I'm trying to figure out the name of a movie I saw as a child. I'm pretty sure this is a movie that came out in the early to mid 80s, and that it would almost certainly be in the horror movie section of your local video movie club. Not certain of the country of origin, but most likely it is American. There are two scenes I remember: 1) Opening scene/credits: a small, rainy harbor. Workers doing boat stuff, wearing yellow raincoats. A demonically-possessed, grimy, possibly rotting humanoid being leaps from the harbor, pulling one of the boat workers down under the water. 2) At various points in the movie: a door opens in a public place (party, bar, restaurant, etc) to reveal a blue glowing void. The doorway wants to possess a certain person in the room. No one else in the room is aware of this door despite it filling the room with light (dramatic irony!). The targeted person desperately tries to resist the lure of the room and implores others to help, but they all just snicker and eventually the person is compelled to enter the room (or is possibly pulled in by some sort of energy field). Once they come out, you know they are now possessed because their eyes are filled with a blue glow. It's possible that I'm conflating two movies, but I don't think so. PLEASE HELP! WHAT IS THIS MOVIE?!?share