80's/90's kids sci-fi miniseries
I'm looking for the name of a miniseries that I saw on Nickelodeon in the late 80's (I think). I believe it was a 3 part movie that may have been from the BBC. It took place in a small, rural town. There was a graveyard with an angel statue in it. The base of the statue opened up to reveal some hidden room(s). The main characters were two or three kids and I know that they found some kind of pendants or amulets. Also, I think some of the characters became possessed and had red, glowing eyes. Any help, please?