Sphere by Michael Crichton (1987) is a gripping science fiction thriller that follows a team of scientists as they explore a mysterious spacecraft discovered on the ocean floor. Blending psychological tension with cutting-edge science, the novel delves into themes of human fear and the unknown, as the crew confronts strange phenomena inside the alien structure. Known for its fast-paced narrative and complex characters, Sphere is a classic Crichton work that keeps readers on edge. This copy is in Very Good condition for its age, showing only wear to the dust jacket.