Now world-famous, they go on vacation to rest after all the press conferences and the Nobel Prize. They're granted a new laboratory by the university; before its dedication, Marie shows off her new dress, inspiring Pierre to get her a set of earrings to go with it. Walking home in the rain, he absentmindedly crosses the street in front of a delivery wagon, and he is run down and killed. Marie almost loses her mind, but after the concerned Prof. Perot counsels her, she remembers Pierre's words that if one of them is gone, the other must go on working just the same. Finally, Marie gives a speech at the 25th anniversary celebration of the discovery of radium, expressing her belief that science is the path to a better world.