Dirk Gently's Holistic Detective Agency
Douglas Adams
Dirk Gently (1)
Hitchhiker's Guide to the Galaxy
HHGTTG (1)
The hitchhiker's guide to the galaxy
Hitchhiker's Guide to the Galaxy (1)
Life, the Universe and Everything
Hitchhiker's Guide to the Galaxy (3)
The long dark tea-time of the soul
Dirk Gently (2)
The Meaning of Liff: The Original Dictionary Of Things There ...
Douglas Adams & John Lloyd
Mostly harmless
Hitchhiker's Guide to the Galaxy (5)
The Restaurant at the end of the universe
Hitchhiker's Guide to the Galaxy (2)
So Long, and Thanks for All the Fish
Hitchhiker's Guide to the Galaxy (4)
The Ultimate Hitchhiker's Guide - All Six Books