Which episode was this???
I remember seeing one episode as a very young kid (probably around 1981-82), and about the only thing that I remember about it, was the Hardy Boys being at some restaurant (in the woods maybe), and people dressed up like monsters and taking their order. Later in the same episode, they were in the woods (possibly hiding out), and there were trucks driving through with loudspeakers blaring the sounds of people screaming. I could be a bit off on this, it was over 25 years ago.
Anyone remember this episode?