[1] In 1879, a freighter captain discovered an uncharted island, presumably risen from its sunken state due to volcanic activity.
Over the years, the mummy gains a reputation as a possible link to an ancient tale from the Black Book by Friedrich von Juntz of a man named T'yog, who challenged Ghatanothoa, one of the gods of Yuggoth, using the power of a magical scroll, the work of the Great Old Ones opposed to Ghatanothoa.
When the possible link to the Black Book and T'yog reaches the general public, the narrator begins to notice more and more suspect foreigners coming to the museum.
During one attempt, two men, armed with the true scroll, die as the mummy seemingly springs to life, opening its eyes and revealing an image of the approaching form of Ghatanothoa.
Robert Bloch wrote a screen adaptation of the story for the 1971 TV series Night Gallery, however it was not produced.