Some of Donald Barthelme’s works have been undeniably influenced by Michel Foucault’s socio-political philosophy, however, few scholars have explored such concepts in his works, especially the theme of “panopticism.” The purpose of this article, which is library based, is to analyze and scrutinize the panoptic society of Barthelme’s “Subpoena” in the light of Foucauldian “panopticism” which is a segment of his more general concept of power. Keeping the Benthamite “Panopticon” in the back of his mind, Foucault outlines the “new physics of power” represented by “panopticism” as a modern or disciplinary power; he, then, draws our attention to its most important feature, i.e., the penetration into the most trivial and personal affairs of social subjects. It is worth mentioning that the basic characteristics of disciplinary power such as omnipresence, omniscience, and omnipotence can be discovered in panoptic society of “Subpoena.” In this society, there is always the possibility of resistance and rebellion because wherever power is found, resistance emerges as well, though, eventually, power prevails upon individuals. Barthelme creatively portrays a post-modern society in which disciplinary power, with its meticulous and permanent surveillance, on the one hand, has transformed the subjects into the men of modern humanism, and, on the other hand, has changed the traditional society into a panoptic one. Barthelme successfully finalizes the story with the message that modern society intends to make obedient and useful machines out of the subjects.