Creator Douglas Adams United Kingdom 9 issues 5 series Most issues in Life, the Universe and Everything (1996) 3 issues Per Anhalter durch die Galaxis (1995) 3 issues The Hitchhiker's Guide to the Galaxy (1993) 1 issue Dirk Gently's Holistic Detective Agency: The Salmon of Doubt (2016) 1 issue Dirk Gently's Holistic Detective Agency (2015) 1 issue