Forbidden Planet box, using the original film poster for its wraparound cover. Both DVD and high definition HD DVD formats were available in this deluxe package. Inside both premium packages were the films "Forbidden Planet" and "The Invisible Boy", "The Thin Man" episode "Robot Client" ("Robby The Robot", one of the film's co-stars, was also a guest star in both "The Thin Man" episode and "The Invisible Boy") and a documentary "Watch the Skies!: Science Fiction, The 1950s and Us". Also included were miniature lobby cards and an 8 cm (3-inch) toy replica of Robby the Robot. This was quickly followed by
Planet of the Dead the theme of Easter was not emphasised in the story; the episode only contained a "fleeting mention" of the holiday instead of "robot bunnies carrying baskets full of deadly egg bombs". The episode's tone word—"joyous"—was influenced by Davies' realisation that "every story since 'The Fires of Pompeii' [had] a bittersweet quality" and his subsequent desire to avoid the recurring theme. The starting point for the story was Roberts' first novel "The Highest Science". Davies liked the image of a train on a desert planet and rewrote the train as a bus. Davies nevertheless emphasised it was not an "adaptation as