In the glittering hotbed of turn-of-the-twentieth-century Vienna, one woman's life would define and defy an era Gustav Klimt gave Alma her first kiss. Gustav Mahler fell in love with her at first sight and proposed only a few weeks later. Bauhaus founder Walter Gropius abandoned all reason to pursue her. Poet and novelist Franz Werfel described her as "one of the very few magical women that exist." But who was this woman who brought...