In this dazzling story of art and illusion, secrets and schemes, who is to be trusted - and what is real?From the internationally acclaimed author of Optic Nerve, a New York Times Notable Book 2019"A writer who feels immediately important" ObserverAt a hotel in Buenos Aires, a woman checks in under a pseudonym. She wears a black fur shawl and has no luggage. She is alone.Over the coming days and nights, she tells a story, which begins with a secret shared in a local bath house, revealing art forgery and fraud on a dazzling scale. At its heart is an enigmatic genius who for years forged portraits of the city"s elite, before disappearing without trace. It is a story of influence and intrigue, in which nothing is as it seems. We"re not to expect "names, numbers or dates", she cautions, but a more subtle kind of reckoning...Told in a mordant, irresistible voice and full of sharp surprises, Portrait of an Unknown Lady is a captivating enquiry into what we mean by "authenticity", in life as in art. At once poised and capricious, elegant and bold, it is a thrilling exploration of the relationships between what is lived, what is told, what is remembered, and what is real.