In September 2025, Argentine prosecutors revealed a discovery that shocked the art world. A stolen painting recovered in Mar del Plata turned out to be Portrait of a Lady by Giuseppe Ghislandi, an Old Master once prized in the Goudstikker looted collection. This work had vanished during World War II, when the Nazis carried out massive art crimes, seizing thousands of works in a wave of Jewish art looting. For decades, it was hidden in South America, tied to the Kadgien family art scandal, before the truth came to light. This book tells the full story of how a Nazi looted art treasure crossed borders and generations. From its creation in 18th-century Italy to its theft during the Nazi invasion of the Netherlands, to its secret journey with Nazi fugitives in Argentina, and finally to its return through modern raids and legal action, the book uncovers how stolen culture can find its way back. Readers will see how this painting became a symbol of returning Nazi-stolen art, not just for its value but for what it represents. It is proof that justice delayed but not denied can still be meaningful. It shows how historical art recovery is possible even after eighty years, how art restitution in Argentina became reality in a modern courtroom, and why such stories matter for both survivors and future generations. The narrative follows the investigators who traced the work from a simple online listing to a courtroom handover. It explores the role of heirs who continue to fight for Holocaust art recovery, the power of journalism in exposing hidden collections, and the legal struggles in every legal battle for art restitution. Readers will come to understand that each case of a stolen masterpiece returned is more than property-it is an act of memory. By the end of this book, you will not only know the path of one painting but also the broader truth of wartime stolen art and why these recoveries matter. You will see how cultural memory through art connects us to the past, why art and justice stories inspire change, and how the recovery of a single painting in an Argentine art recovery case can stand for thousands of silent losses. The Lost Lady Returns is more than history. It is a record of how looted artwork restoration speaks across centuries, how one face in a portrait carries the weight of families destroyed, and how each act of recovery of stolen art keeps alive the voices of those silenced by war. For readers of history, art, and human rights, this book offers both knowledge and hope.