This listing is for two first edition hardcover books by Robin Cook: "Mortal Fear" and "Invasion". Both books are in English and come with dust jackets. The books are in great condition and are a must-have for fans of crime and thriller, horror, and mystery genres. The narrative type is fiction, and the books fall under the subject of mystery and thriller. One book was published by G.P. Putnam's Sons in the United States and the other by Berkley Books. Both are perfect for anyone who loves medical techno-horror and medical thrillers. Don't miss out on adding these amazing books to your collection!