The Hitchhiker's Guide to the Galaxy President; the depressed robot Marvin the Paranoid Android; and Trillian, formerly known as Tricia McMillan, a woman Arthur once met at a party in Islington and the only other human survivor of Earth's destruction thanks to Beeblebrox' intervention. The first radio series comes from a proposal called "The Ends of the Earth": six self-contained episodes, all ending with Earth's being destroyed in a different way. While writing the first episode, Adams realized that he needed someone on the planet who was an alien to provide some context, and that this alien needed a reason to be there. Adams finally settled
The Hitchhiker's Guide to the Galaxy Tertiary to Hexagonal Phases The Hitchhiker's Guide to the Galaxy Tertiary to Hexagonal Phases The Tertiary Phase, Quandary Phase, Quintessential Phase and Hexagonal Phase are respectively the third, fourth, fifth and sixth series of "The Hitchhiker's Guide to the Galaxy" radio series. Produced in 2003, 2004 and 2018 by Above the Title Productions and Perfectly Normal Productions for BBC Radio 4, they are radio adaptations of the third, fourth, fifth books and sixth books in Douglas Adams' "The Hitchhiker's Guide to the Galaxy" series: "Life, the Universe and Everything"; "So Long, and Thanks For All the Fish"; "Mostly Harmless" and "And Another Thing...". These