In "A Crime of the Under-seas," Boothby crafts a gripping tale of adventure and intrigue set in the mysterious and often dangerous world beneath the sea. The story typically involves elements of crime, suspense, and exploration, reflecting Boothby's flair for creating thrilling narratives.The plot centers around an audacious crime that takes place under the sea, possibly involving submarines or underwater exploration, which were burgeoning fields of interest during Boothby's time. The novella combines elements of maritime adventure with a detective-like pursuit, as characters navigate the perils of the ocean in their quest to solve or commit the crime.