A first in audio publishing, this DVD-Audio disc presents six episodes of "The Hitchhiker's Guide to the Galaxy" in 5.1 Dolby surround sound. "The Tertiary Phase" is the long-awaited, brand new third series of "The Hitchhiker's Guide to the Galaxy", with 25 minutes of action not included in the BBC Radio 4 broadcast. Many of the cast of the original BBC Radio 4 series have been reunited for this new six-part dramatisation of Douglas Adams' book, "Life, the Universe and Everything". Amongst the returning cast are Simon Jones as Arthur Dent, Geoffrey McGivern as Ford Prefect, Susan Sheridan as Trillian, Mark Wing-Davey as Zaphod Beeblebrox and Stephen Moore as Marvin the Paranoid Android. Other famous names in these new productions include Richard Griffiths, Chris Langham, Joanna Lumley and cricket commentators Fred Trueman and Henry Blofeld. A standard stereo mix of "The Tertiary Phase" is also available on CD and cassette.