"The Abyss of Nymphs" by Stanley Mullen is an exciting science fiction novel that transports readers to an exciting world of the future. The main character, a research scientist, goes to the remote planet Nymphon in search of a secret that could change the fate of the entire cosmos. However, they face unprecedented obstacles and mysterious creatures of a real nightmare. Can the main character survive and solve the mystery of the underground dungeons of the Nymphons? "Abyss of Nymphon" is an exciting adventure that will leave you on the edge of consciousness and reality.