In the early episodes of the series, Marjory the Trash Heap came off as a humbug with no real power, but by the end of the first season, she displayed real magical abilities. She makes all the radishes disappear in "The Great Radish Famine," and appears in a vision to Wembley and Gobo in "The Beast of Blue Rock." In this episode, she appears in the Fraggles' dreams.
A new creature is introduced in this episode, the flying batworm, or hairy-chested batworm. According to Gobo, no one has ever seen one before because they only come out at night.
Phil Balsam wrote the music for almost every Fraggle Rock song. This episode is the only one in which Balsam's voice appears in the broadcast, as the guitar-playing Phil Fraggle singing "Easy is the Only Way to Go."
When Mokey becomes the new Trash Heap, Wembley takes on the roles of both PhiloandGunge. He gets confused about what he's supposed to say ("Is it all-hearing?") and ends up just shouting "Nyaaaah!"