Paola Rinaldi undressing by the window in a classic movie(0:42)

Young American scientist Alan Whitmore travels to Budapest to meet Professor Roth, a fellow scientist. Arriving in the Hungarian capital, Alan meets with the professor, who hands him a black book, which, according to him, contains incredibly important information. Alarmed, Alan tries to meet with the professor again, but it is too late, the professor is killed. Alan begins his own investigation.