The Hitchhiker's Guide to the Galaxy, written by Douglas Adams, is a humorous space thriller mystery that has become a cult classic. The story follows the misadventures of Arthur Dent, an ordinary human who is swept off Earth just before its destruction to make way for a hyperspace bypass. As Arthur travels through space with his alien friend Ford Prefect, they encounter bizarre creatures, intergalactic politics, and the ultimate question of life, the universe, and everything. With its witty writing, absurd humor, and imaginative world-building, The Hitchhiker's Guide to the Galaxy is a must-read for fans of space thrillers and mysteries.