Lost in the blacked-out streets of Paris during the First World War, Marcel stumbles into a brothel and accidentally witnesses a shocking scene involving the Baron de Charlus. Later, at a reception given by the Prince de Guermantes, his meditations on the passage of time lead to his determination to embark on his life's work at last. Time Regained is the twelfth and final part of Marcel Proust's Remembrance of Things Past cycle.