'Baron's book is a rigorously argued, lucidly written and comprehensive account of parenting rights, roles and responsibilities, showcasing the complex nature of questions about what makes someone a parent. Baron argues in favor of theorizing distinctions between biological, legal, moral and social parenthood, and demonstrates that a nuanced approach lends clarity to ethical debates. This is top-notch philosophical work that speaks to urgent contemporary dilemmas.' Amy Mullin, University of Toronto Mississauga