Who was the author that penned the 6th installment of a trilogy that originated on BBC Radio 4 as a comedy broadcast in 1978?
And Another Thing... (novel):  The book, written by Eoin Colfer, author of the "Artemis Fowl" series, was published on the thirtieth anniversary of the first book, 12 October 2009, in hardback. The Hitchhiker's Guide to the Galaxy:  Originally a radio comedy broadcast on BBC Radio 4 in 1978, it was later adapted to other formats, including stage shows, novels, comic books, a 1981 TV series, a 1984 computer game, and 2005 feature film.
i don't know