This collection of datasets, derived from the National Crime Records Bureau (NCRB) Prison Statistics India reports, provides a detailed look at the systemic flow of inmates through the Indian penal system. It specifically monitors prisoner releases and transfers, tracking the annual exit of convicts, undertrials, and detenues through various legal channels such as bail, acquittal, appeal, and completion of sentences. The data also captures critical operational and humanitarian metrics, including the physical movement of inmates outside prison premises for court and medical visits, the status of long-term undertrials under Section 436A of the CrPC, and the prevalence of mental illness among the incarcerated. Additionally, it provides specific insights into the management of parole, documenting the rates of release, absconding, and subsequent arrests. Together, these datasets offer a vital empirical foundation for analysing judicial efficiency, prisoner welfare, and the overall rehabilitative capacity of India's correctional framework.