This article describes how Lumos, founded by J.K. Rowling in 2005, is marking 20 years of work reforming child care systems globally and reports having helped more than 280,000 children move into safe, loving families rather than institutions. Looking ahead, Lumos has set ambitious goals for its next decade: enabling 500,000 children in care to return to family‑based care, and preventing 10 million children from experiencing family breakdown or separation.