This volume investigates the complex behavioral and ecological challenges involved in rehabilitating a captive-raised lioness for life in the wild. Joy Adamson, a naturalist and conservationist, documents her multi-year effort to reintegrate Elsa, an orphaned lioness, into her natural habitat in Kenya. The work synthesizes observations from three distinct phases of the lioness's life, providing a longitudinal study of human-animal interaction and the realities of wildlife conservation in the mid-20th century.

The text serves as a foundational document in the history of wildlife conservation, offering a detailed, if subjective, account of the human-animal bond. Its focus on the practical difficulties of rewilding provides a clear, albeit dated, perspective on the evolution of environmental stewardship.