Operation Luna
Poul Anderson returns to the world of his acclaimed novel Operation Chaos with a tale of one family's mission to the moon.
Ginny Greylock and Steven Matuchek are partners on an Earth quite unlike our own. For starters, Ginny is a licensed witch and Steve is a werewolf. Steve moonlights as an engineer working on a spacecraft in the Arizona desert, along with Will Greylock, Ginny's older brother. Will has determined that there are intelligent beings on the moon. Neither Will nor the U.S. government has any inkling as to the nature of these moonsprites, and everyone is anxious to make contact. But when the time comes to test the would-be spacecraft, a host of bugs, snafus, and angry spirits conspire to prevent the launch.
It's a recipe for perfect lunacy as Ginny and her clan struggle to figure out who, or what, is sabotaging the greatest magical and scientific achievement of the century.
Readers also enjoyed
Poul Anderson
Poul Anderson's name is synonymous with the golden age of science fiction, a master of speculative worlds where the future is as vast and varied as the past. Born in 1926 in the United States, Anderson's journey as an author was shaped by his fascination with history, science, and the unknown. A child of the Great Depression, he was drawn to stories that stretched the boundaries of possibility, whether set in the stars or rooted in the depths of myth. Over the course of his career, Anderson built a reputation for crafting intricate narratives that blend hard science fiction with the richness of historical and fantasy elements, making him one of the genre's most respected voices.
Operation Otherworld
Operation Otherworld consists of two primary books, and includes one additional book that complement the series but is not considered mandatory reads. The current recommended reading order for the series is provided below.

