As part of our mission to enhance learning and ensure access to information for all library patrons, our profession needs to come to terms with the consequences of mass incarceration, which have saturated the everyday lives of people in the United States and heavily impacts Black, Indigenous, and people of color; LGBTQ people; and people who are in poverty. Jeanie Austin, a librarian with San Francisco Public Library's Jail and Reentry Services program, helms this important contribution to the discourse, providing tools applicable in a variety of settings. This text covers practical information about services in public and academic libraries, and libraries in juvenile detention centers, jails, and prisons, while contextualizing these services for LIS classrooms and interdisciplinary scholars. It powerfully advocates for rethinking the intersections between librarianship and carceral systems, pointing the way towards different possibilities. This clear-eyed text