
A lone island in the Caribbean hides a dark inheritance, where a centuries‑old social experiment set in motion by the Robertson patriarch now threatens the lives of his descendants. When the seventh Jonathan Robertson returns to his family estate after a long absence, he finds the once‑peaceful home eclipsed by a grim factory belching smoke from the cliffside, and a cryptic letter that warns of a curse placed on the bloodline. The island’s lush palms and quiet mansions mask a sinister legacy tied to a mysterious vein of lapis lazuli that once promised wealth but now seems to bind the family to an unseen menace.
As Jonathan steps back into the decaying manor, he confronts the ghosts of his past—his father’s sudden death, the haunting rumors of “jumbies,” and the relentless grind of industry that refuses to pause even for funeral rites. The story unfolds as he begins to decipher the warning, hinting at a scientific experiment gone awry and a moral dilemma that could decide the fate of the island and its cursed lineage.
Language
en
Duration
~34 minutes (32K characters)
Publisher of text edition
Project Gutenberg
Original publisher
United States: Columbia Publications, Inc., 1951.
Credits
Greg Weeks, Mary Meehan and the Online Distributed Proofreading Team at http://www.pgdp.net
Release date
2023-04-27
Rights
Public domain in the USA.

1900–1980
A prolific American pulp writer, he filled the pages of early science fiction magazines with fast-moving stories and vivid ideas. He also wrote mystery and adventure fiction, building a long career across popular magazines of the mid-20th century.
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