I have forgotten the name of this movie and it has been driving me crazy literally for years! Please help my sanity!

The movie is back in the 80's.. I think. It is about a group of kids you go into an old abandoned building.. church I think. They blindfold this girl, form a circle around her and begin chanting and the girl disappears. I remember the kids screaming "do not break the circle" at some point. I believe the girl that is blindfolded disappears because someone "broke the circle." Please help me remember this movie... I will be eternally grateful.

D. Hodges

It's The Watcher in the Woods.

That's the creepiest Disney movie EVER!

::shudder::