The true incident of the German U-Boat which torpedoed an Argentine ship to make Argentina declare war on the Allies. The film was not as successful as Cristiani's previous film, The Apostle from 1917, since Without a Trace was confiscated by the Ministry of Foreign Affairs by order of President HipĆ³lito Yrigoyen and purportedly destroyed. It is unknown if any copies of the film exist, and it is currently considered a lost film.