Can Someone Help Me?

I grew up in the 80's, and although my parents tried really hard to keep me from watching scary movies, I managed to sneak one in now and then.

But I'm having trouble keeping them straight in my mind.....I seem to have 2, maybe 3 movies mixed up, and maybe one I'm remembering that I can't seem to find.....

I think I remember Happy Birthday To Me-was the killer the twin sister? I'm confused on that....also, for some reason, I thought Daphne Zuniga was the star of that movie.....or maybe the next one I'm about to describe.....

I'm also vaguely remembering a movie that took place in a mall after-hours, but I don't remember any killer robots at all. I remember girls sneaking in, one of their daddys was the owner of the mall, the building, or security or something, and when they got there the guys showed up.....typical teenage stuff. They go in, have a blast for a while, then split up for, well, you know-typical teenage stuff. One by one and couple by couple they're picked off. I remember one scene in particular where a couple was making out on a bed in a display in some department and I believe the weapon was an arrow. I don't think it got both, because I want to say it got the boy while the girl was in the bathroom. Maybe this is the movie where a twin sister's involved? I just can't figure it out. I've spent the last hour and a half trying to track down the movie, following leads, reading MBs, and just haven't run across anything that sounds like what I think I'm remembering. This one was the closest, and it's really not even that close!


Can someone help me clear this up? Sorry for the long post. And the fact that it's not all that helpful.


SETTLE OR BE SETTLED!!!