This document provides a summary of the book "Postmodern Theory: Critical Interrogations" by Steven Best and Douglas Kellner. The book systematically analyzes postmodern theory and evaluates its relevance for critical social theory. It provides an introduction and critique of theorists like Foucault, Deleuze and Guattari, Baudrillard, and Lyotard. It also discusses postmodern feminist theory and the politics of identity. While postmodern theory provides insights, the authors argue it lacks adequate methodological and political perspectives for a critical social theory or radical politics. The document examines chapters on these various postmodern thinkers and their critiques of and departures from modernism.