D-99 by H.B. Fyfe is a compelling science fiction novel that delves into the ethical dilemmas of technology and artificial intelligence. The story follows a group of explorers who stumble upon a planet inhabited by highly intelligent beings, known as the Throgs. As they learn more about the Throgs and their advanced technology, they are faced with the decision of whether to intervene in the Throgs’ society or leave them to their own devices.

Fyfe does an excellent job of building tension throughout the story, making the reader question the implications of meddling in another civilization’s development. The characters are well-developed and relatable, adding depth to the ethical debates that arise.

Overall, D-99 is a thought-provoking and engaging read that will leave readers pondering questions about the responsibilities of advanced civilizations and the moral implications of interfering in the lives of others. Fans of classic science fiction will enjoy this novel for its philosophical themes and riveting plot.

Book Description:
Five citizens of Terra were being held on other worlds -- and the ultra-secret Department 99 existed only to set them, and others like them, free.