Nick Draaijer had been captivated since childhood by the beautiful portrait above his grandparents' couch. When he was old enough, he was privy to their family secret: that portrait, of his great-great-grandmother, had been painted by none other than Piet Mondrian. In 2018, it was sold and opened to the public, a moment that rekindled Draaijer's fascination and launched a search for the history of the canvas. This soon turns out to yield one discovery after another: the bond between Mondrian and his great-great-grandfather was strong, together the two men formed an important pivot in Dutch cultural history, one as an artist, the other as a successful coffee merchant and patron. Draaijer tells an exciting and compelling story, about the Freemasons and resistance to the Nazis during World War II, and numerous colorful characters, such as Max Euwe, who married into the family and was in charge of Mondrian's paintings. Set against the backdrop of the booming art world of twentieth-century Amsterdam, this extraordinary family history tells the swirling story of a slowly splintering family, and old secrets that come to light.