A mysterious cloud drifts menacingly through space...
A sudden energy flash and the Doctor is infected with the Nucleus of a malignant Virus that threatens to destroy his mind.
Meanwhile, on Titan, human slaves prepare the Hive from which the Virus...
![Завоевание неба (полутом 1) [Космические путешествия, контакты с инопланетянами в произведениях советских фантастов 20-х — начала 40-х годов ХХ века]](https://www.rulit.me/data/programs/images/zavoevanie-neba-polutom-1-kosmicheskie-puteshestviya-kontakt_825481.jpg)
