"Double Trouble" by Carl Jacobi is a science fiction novella that whisks readers away on a thrilling expedition to Jupiter's Eighth Moon. Guiding the charge is the imaginative writer, Grannie Annie, whose entourage, including an old prospector and a Martian illustrator, faces unexpected challenges and strange landscapes. Their voyage begins as an investigation into "Red Spot Fever," a peculiar sickness causing miners to chatter uncontrollably, yet soon evolves into a complex plot involving hypnotic devices and mischievous parrot-like aliens who create duplicates of the explorers. With a blend of humor and suspense, the tale chronicles Grannie Annie using her wit to outsmart her adversaries, liberating the miners and restoring order in a world brimming with oddities and surprising twists.

Double Trouble
By Carl Jacobi
When a talkative disease sweeps through the miners of Jupiter’s Eighth Moon, a team of unlikely heroes unearth a scheme woven by duplicates and hypnotic whispers.
Summary
About the AuthorCarl Richard Jacobi was an American journalist and writer. He wrote short stories in the horror and fantasy genres for the pulp magazine market, appearing in such pulps of the bizarre and uncanny as Weird Tales, Ghost Stories, Startling Stories, Thrilling Wonder Stories and Strange Stories. He also wrote stories crime and adventure which appeared in such pulps as Thrilling Adventures, Complete Stories, Top-Notch, Short Stories, The Skipper, Doc Savage and Dime Adventures Magazine. Jacobi also produced some science fiction, mainly space opera, published in such magazines as Planet Stories. He was one of the last surviving pulp-fictioneers to have contributed to the legendary American horror magazine Weird Tales during its "glory days". His stories have been translated into French, Swedish, Danish and Dutch.
Carl Richard Jacobi was an American journalist and writer. He wrote short stories in the horror and fantasy genres for the pulp magazine market, appearing in such pulps of the bizarre and uncanny as Weird Tales, Ghost Stories, Startling Stories, Thrilling Wonder Stories and Strange Stories. He also wrote stories crime and adventure which appeared in such pulps as Thrilling Adventures, Complete Stories, Top-Notch, Short Stories, The Skipper, Doc Savage and Dime Adventures Magazine. Jacobi also produced some science fiction, mainly space opera, published in such magazines as Planet Stories. He was one of the last surviving pulp-fictioneers to have contributed to the legendary American horror magazine Weird Tales during its "glory days". His stories have been translated into French, Swedish, Danish and Dutch.