 Shot from August to November 1943, the release was put on hold for more than a year, pending authorization by the pro-Axis military government of that time.The film is also remembered in Argentina for Libertad Lamarque's performance of the tango "Uno", composed by Mariano Mores and Enrique Santos Discépolo.A female Argentine tango singer in occupied France (Libertad Lamarque) gets romantically involved with a Resistance member (Juan José Miguez).