On a luxury liner going to the colonies Smith embarked, an illusionist black, and his wife Dainah, a mixed race. During a dancing party, this one is unleashed and provokes the envy of Michaux, a mechanic on board. When she leaves on the bridge, Michaux throws herself on her but she pushes him violently and bites her arm. The next day, the Commander showed her the liner and she recognized her assailant on her arm bandaged

检察官Etzel发现，他的父亲仅凭推定就对一名男子Leonardo Maurizius判刑。然后，他以追查案件的来源来揭露真相为荣。

1953 film by Augusto Genina