From a theoretical and policy perspective, little is known about the life-course development of lesbian, gay, bisexual, transgender, and queer (LGBTQ+) people in criminology. In particular, turning points for LGBTQ+ people have not received much theoretical discussion or testing. The lack of theoretical discussion persists even though LGBTQ+ people are overrepresented in the criminal legal system. To address this gap, the current dissertation seeks to queer the life-course perspective in criminology. This dissertation takes stock of the relevancy of traditional turning points (marriage and employment) for LGBTQ+ people, examines through a critical lens the cis- and hetero-normative construction of life-course and theoretical criminology, and theorizes turning points specific to LGBTQ+ people. This dissertation draws on scholarship from various disciplines to present and test an interdisciplinary framework that theorizes three queer turning points: (1) the coming-out process (Chapter 2), (2) family reaction to LGBTQ+ identity (Chapter 3), and (3) establishing a chosen family (Chapter 4). This study is among the first to collect original data via life history interviews with 25 formerly incarcerated LGBTQ+ people to offer comprehensive and in-depth examinations into the relationships between the coming out process, family reaction to LGBTQ+ identity, and chosen family on offending and desistance trajectories. Collectively, findings indicate that these queer turning points are significant life experiences that shape the development and offending/desistance trajectories among formerly incarcerated LGBTQ+ people. In particular, these queer turning points are linked to increases and decreases in offending across the life-course, which are highly contextualized by generational and structural factors. In addition, this work explores how coming out, family reaction, and chosen family shape interactions with the criminal legal system among LGBTQ+ people. Overall, this dissertation expands the queer perspective within life-course criminology through the lens of queer turning points and can shape future policies that meet the needs and best support LGBTQ+ people.