The Hitchhiker's Guide to the Galaxy (novel) productions in the late 1970s. Davies himself appears as Prosser. This edition is out of print – Adams bought up many remainder copies and sold them, autographed, on his website. There have been three audiobook recordings of the novel. The first was an abridged edition (), recorded in the mid-1980s by Stephen Moore, best known for playing the voice of Marvin the Paranoid Android in the radio series, LP adaptations and in the TV series. In 1990, Adams himself recorded an unabridged edition for Dove Audiobooks (), later re-released by New Millennium Audio () in the United States and available
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