"The Crack of Doom" by Robert Cromie is a novel written in the late 19th century. The narrative centers on Arthur Marcel, a British traveler who meets the enigmatic Herbert Brande during a sea voyage. As Marcel becomes embroiled in Brande's mysterious society, he finds himself drawn to Brande's sister, Natalie, and grapples with the implications of their association with a group that seems to hold sinister secrets about the nature of the universe and the fate of mankind. The opening of the book introduces us to Arthur Marcel, who, while on a ship heading for Queenstown, encounters Herbert Brande, whose cynical views on the universe spark a profound conversation. Their meeting hints at deeper themes as Marcel learns about Brande's newly formed "Cui Bono Society." The narrative quickly shifts towards Marcel's obsession with Brande's sister, Natalie, and the peculiar elegance of her character, which contrasts sharply with her brother's cold rationalism. Tension grows as the plot establishes the society's unsettling aims, presenting a tantalizing blend of romance, scientific intrigue, and existential dread. (This is an automatically generated summary.)