The Strange Case of Delfina Potocka: The Mystery of Chopin is a 1999 English-language Drama movie. Warsaw, 1945. The invading Nazis are gone and, in a symbolic gesture, the preserved heart of Polish composer and national hero Frédéric Chopin is returned. Under German rule, even the mention of Chopin was forbidden; now, as the war-battered nation reassembles itself, author Jaroslaw Iwaszkiewicz recommences work on his biography of the great man. A strange woman contacts him, carrying revelatory letters that she claims the composer wrote her great-grandmother, his lover. But is the woman a fraud? Are the letters forgeries? And since they show Chopin in a less than flattering light, would Poland prefer to suppress them? Written by Peter Brynmor Roberts. The strange case of delfina potocka: the mystery of chopin stars Paul Rhys in the title role along with an ensemble cast including Penelope Wilton, Valentina Igoshina, Elizabeth Mcgorian, John Shrapnel, Patricia Quinn and Corin Redgrave.