From Douglas Adams, the legendary author of one of the most beloved science fiction classics of all time, The Hitchhiker’s Guide to the Galaxy, comes a wildly inventive novel of ghosts, time travel, and one detective’s mission to save humanity from extinction. DIRK GENTLY’S HOLISTIC DETECTIVE AGENCY We solve the whole crime. We find the whole person. Phone today for the whole solution to your problem. (Missing cats and messy divorces a specialty) In this novel from the legendary Douglas Adams, quirky and bumbling Private Investigator Dirk Gently stumbles upon a million-year-old ghost, wandering the earth and disturbing all its people. What he uncovers is the ghost’s desperate plot to go back in time to prevent its own death. But this ghost was no ordinary person, and helping it save itself just might change the modern world as we know it. And not in a good way.