"The Mercurian" by Frank Belknap Long is a science fiction novella that unfolds on the scorching planet of Mercury, where a crew of uranium miners face the extraordinary. Young officer Rawley's life takes a turn when the team captures an unusual frog-like being. This creature is more than it seems, using telepathy and great intelligence to upend the miners' lives and put everyone at risk by exposing their fears. As tensions mount, Rawley must contend with both the external threat of the Mercurian and internal challenges, especially his growing affection for Sylvia, the commander's niece. This dynamic adds an emotional intensity to the struggle for survival as the crew are forced to fight their mysterious and lethal adversary.

The Mercurian
By Frank Belknap Long
On a distant planet of molten landscapes and intense heat, a crew of miners encounters an intelligent, telepathic amphibian, changing them forever and challenging their perception and grasp on survival.
Summary
About the AuthorFrank Belknap Long Jr. was an American writer of horror fiction, fantasy, science fiction, poetry, gothic romance, comic books, and non-fiction. Though his writing career spanned seven decades, he is best known for his horror and science fiction short stories, including contributions to the Cthulhu Mythos alongside his friend, H. P. Lovecraft. During his life, Long received the World Fantasy Award for Life Achievement, the Bram Stoker Award for Lifetime Achievement, and the First Fandom Hall of Fame Award (1977).
Frank Belknap Long Jr. was an American writer of horror fiction, fantasy, science fiction, poetry, gothic romance, comic books, and non-fiction. Though his writing career spanned seven decades, he is best known for his horror and science fiction short stories, including contributions to the Cthulhu Mythos alongside his friend, H. P. Lovecraft. During his life, Long received the World Fantasy Award for Life Achievement, the Bram Stoker Award for Lifetime Achievement, and the First Fandom Hall of Fame Award (1977).