Michael Crichton wrote a total of three Jurassic Park-related novels. The first book, titled Jurassic Park, was published in 1990 and introduces readers to the concept of cloning dinosaurs and the consequences that ensue when they are brought back to life. Following its success, Crichton released a sequel called The Lost World in 1995, which continues the story of the dinosaurs and their impact on the world. Additionally, there is a posthumously published book titled Jurassic Park: The Lost World based on Crichton’s original ideas, but this was not authored by him. To sum up, Crichton is credited with two main novels directly tied to the Jurassic Park franchise.