The Haunted Earth may be Koontz's funniest novel. Published in 1973, it's set in the near future world of 2000 on an Earth which has had an alien race called the Maseni around for a decade. The Lovecraftian Maseni have brought their supernatural friends, and release Earth's supernatural and mythological beings into the general populace, too. The United Nations drafts rules and regulations so that everyone can live in harmony, but a new race of supernatural beings appears on the peace-loving Maseni homeworld and commits murder. P.I. Jessie Blake, Brutus the Hellhound, and sexy Miss Helena are dispatched to investigate... It's a funny romp but is written in a clear and straight-forward manner and the pace is very fast. Not only do they visit the planet, but the afterlife as well, and they have a rotary-dial Netherphone they can call out with. In another scene, God is the guest on a robot talk show for an interview. It's a grand farce that mixes the horror, science fiction, mythology, fantasy, and detective genres to great comedic effect. This is another of Koontz's early novels that he said wasn't worthy of revision or reprint, but he was wrong.