The Indian police officers employed under the British Government during the colonial period experienced first-hand interactions with both the natives and the English simultaneously, among whom were included people belonging to different parts and positions of the society, such as ordinary citizens, criminals and government officials. The native police were placed in a peculiar position. As policemen they were compelled to work as agents of the colonial government while possessing, at the same time, an anti-colonial sentiment in mind, at least some of them, if not all. Priyanath Mukhopadhyay was one such native officer who worked for thirty three years in Calcutta Detective Police. His semi-autobiographical Darogar Daptar makes us acquainted with the criminal world of the fien-di-siecle Calcutta (presently Kolkata). The accounts throw light on a period when the Indians, and more specifically the Bengalis, not really unsupported by the native officers, were slowly uniting against the various forms of injustice brought upon them by the British colonial rulers. This article intends to explore the strong anti-colonial sentiments expressed in the tales of Darogar Daptar and also to establish thereby how postcolonial elements are available in literary texts written long before the very term ‘postcolonialism’ came into vogue.