Ghosts of Ganymede by Oscar Olea is a gripping science fiction novel that delves into the eerie and mysterious messages originating from Jupiter’s moon, Ganymede. The story follows Airina as she navigates a world on the brink of insanity due to these relentless messages. The novel is praised for its imaginative plot and the way it blends hard science fiction with psychological elements. Overall, it’s a compelling read for fans of space exploration and psychological thrillers.