Summery from Wikipedia
Summers' character and three young children (friends of his, all of whom seem to play themselves) arrive at a mysterious mansion after they get a flat tire. Within, they find, among other things, heads falling from the ceiling, Burton performing card tricks, and even a bizarre demon-like villain character who engages in a prolonged swordfight with Burton. At the end of this fight, Burton performs another display of his talents, wherein he reveals that the demon character never existed, and that the entire ordeal was, in his words, "just a trick". Afterward, the characters leave the mansion, where they meet another lost traveler, Stan Allen, magician, looking for a phone (he had run out of gas), whom they wryly tell to "help [himself]".
Marc Summers’ Mystery Magical Special