Madman

At a summer camp, one night while everyone there is sitting around a campfire, one cocky teenage boy named Richie defiantly and loudly calls out the name of the serial killer Madman Marz after both he and the other campers are strictly told not to do so, and indeed are just as strictly told never to say it at all above a whisper, by one of the counselors. Suddenly, counselors and campers alike are being maimed and slaughtered in various ways by the murderous backwoodsman who always returns to kill people whenever his name is loudly called out.