In 1970, the burned body of an unidentified woman was found in Norway’s Ice Valley. She carried no ID, but police soon uncovered a trail of false names, coded notes, wigs, foreign money, and hotel stays across Europe. Witnesses remembered a woman who was elegant, private, and always seemed on guard. In this episode, we follow the evidence, the witness accounts, and the questions that still surround one of Europe’s most haunting unsolved mysteries: who was the Isdal Woman?