Starred Review. Originally published in as part of a short-lived revival of the Classics Illustrated line, this adaptation of Sinclair's muckraking socialist novel. Struggling with Upton Sinclairâ€™s The Jungle? Check out our thorough summary and analysis of this literary masterpiece. Upton Sinclair's The Jungle is a vivid portrait of life and death in a turn-of-the- century American meat-packing factory. A grim indictment that led to government.