Norwegian-born Unni Turrettini grew up a multicultural citizen, living in Norway, the United States, France, and Switzerland. She has law degrees from Norway, France, and the United States, and is a member of the New York Bar. She worked numerous years in law and finance in Paris, France, and Geneva, Switzerland. Her other works include The Mystery of the Lone Wolf Killer, published by Pegasus Books (2015). After many years abroad, she now lives in Oslo with her family.