Four years ago, in the French newspaper "Libération," I revealed the extraordinary discovery of a previously unknown collection of works by Pablo Picasso.

The news flashed around the world. “Never before has such an important ensemble of works—completely unknown until now—been found in private hands”, said Anne Baldassari, then the director of the Musée Picasso in Paris. The value of these works could be as high as €70m.

Now, the epilogue to the story is being played out in the French courts.