Lou Cosyn, a young woman and a single parent, opens an art gallery during World War II in Belgium’s occupied capital. The connection with René Magritte and his friend, the one-time Paris gallerist Camille Goemans, has contributed to the perception of Lou Cosyn as a poster child for Goemans’s new surrealist gallery in Brussels. But extensive archival research reconstructs Lou’s exhibition calendar and shows her as a determined gallerist attentive to the postwar emergence of a second generation of abstract artists in Belgium. Meet the confident young art dealer who treats the bigwigs of her contemporary art world to vodka lemon on the balcony of her posh Brussels apartment in July 1944.