
This is the sixth and final novel in Isaac Asimov's classic "Lucky Starr" science fiction series, featuring the heroic Space Ranger David Starr. In this adventure, Starr must race against time to identify and stop a mysterious saboteur who is threatening a revolutionary new space travel technology, putting countless lives at risk. The enemy is unusually elusive, defying conventional understanding of human or alien threats. Ideal for middle-grade readers who enjoy space exploration, mystery, and thrilling adventures with a strong protagonist.
The sixth novel in the extra-terrestrial odyssey of David Starr. Sabotage of a revolutionary advance in space travel means every life is at hazard. Only a handful of highly trusted men were supposed to know the secret. But, someone else knew! For David Starr it was probably the most important and dangerous mission he had ever faced. He had to find the mysterious saboteur before the damage became irreparable. But the unknown enemy didn't seem human. Not even remotely alien, either! This is the final volume in the star-blasting series of David 'Lucky' Starr, Space Ranger.