Robert Ferguson is one of the world's leading scholars in Scandinavian studies. After studying in London under Peter Foote, co-author of the classic Viking Achievement, he emigrated to Norway in 1984. At the invitation of the Norwegian Government he has lectured on aspects of Norwegian and Scandinavian history and culture at embassies, universities and other cultural venues in St Petersburg, New Delhi, Mumbai, Oslo, Bergen, Prague, Warsaw, Riga, Edinburgh, Vasa, New York and at the Library of Congress in Washington. His previous books include biographies of Henrik Ibsen and Knut Hamsun, and in 2002 his Viking Age novel Siste kjaerlighet (Last Love), based on the 13th century Saga of Hallfred the Troublesome Poet, was published to critical acclaim in Norway. The Hammer and the Cross was written between 2002 and 2009 in Oslo and on the Isle of Cumbrae.