The fourth chapter examines the pervasive use of physical and psychological torture within colonial prisons in Bengal, despite official claims of minimal and exceptional use of corporal punishment. Drawing on revolutionary life writings, it reveals the systematic application of torture, often absent from official records, as a tool for enforcing colonial control. This chapter argues that the process of producing a ‘docile’ colonial body began with practices like tattooing (godna), photographing, and fingerprinting, followed by solitary confinement and torture. Both physical and psychological torture, including humiliation and abuse, were integral part to this punitive system. The role of the prison doctor was critical, determining the extent of pain a convict's body could endure, thus transforming the prison into a necropolitical space—a site exercising control over life and death. This chapter thus highlights how the colonial prison, under the guise of rehabilitation, relied on violence to neutralize political activism in Bengal.