Skillfully deploying a large cast of characters, Sheehan retraces the development of Marxist philosophy of science through detailed and highly readable accounts of the debates that have characterized it. Approaching Marxism from the perspective of the philosophy of science, Sheehan shows how Marx\'s and Engel\'s ideas on the development and structure of natural science had a crucial impact on the work of early twentieth-century natural philosophers, historians of science, and natural scientists. From the ideas of Marx and Engels, those of the Marxist theoreticians of the Second International to the debates within Russian Marxism up to World War II, Sheehan masterfully surveys the history of marxist philosophy of science, concluding with a close analysis of the development of the debate among non-Soviet Marxists, placing particular emphasis on the contributions of leading British Marxists in the 1930s.