The Octopus, novel by Frank Norris, published in 1901 and subtitled A Story of California. It was the first volume of The Epic of the Wheat, his unfinished trilogy about the production, distribution, and consumption of American wheat. The Octopus examines the struggle of California wheat farmers in the San Joaquin valley against the powerful Pacific and Southwestern Railroad monopoly. Norris employed the technique of literary naturalism in the novel to dramatize the issues of environmental determinism and social justice.