Wonder what ever happened to that blue stone?  Since I am a tri-state area resident, I have always enjoyed all the local references on many of the shows, Mt Vernon for instance in this one! However Hanover Hill is completely fictitious , maybe a disguised reference to Bedford Hills?

Although I found myself anticipating the conclusion, I enjoyed this. Reminiscent of a Twilight Zone episode. It was written by one of my favorite RMT writers (Bob Juhren) and had cast members not often heard on the show, which was refreshing.