Before leaving on grant to Cold War Berlin, Professor Renate Seiler discovers letters among her late mother's effects that point to her deceased father Kurt's Nazi ties. Renate decides to investigate. En route in Germany, she visits her Aunt Hildegard, who says Herr Westerheim, an old friend from Berlin, might know more. Unable to reach him, Renate seeks diversion and goes with Robert Bennett to hear Christine, a chanteuse at the Black Panther. When...