The Alibi

Professor Winckler murders his wife's lover. The Master of Black Magic then gives a huge sum of money to Hélène, a taxi-girl in a nightclub where he works, to say that she had spent the fateful night in his company. Hélène accepts at first but when she learns of the crime, she wants to back out of the deal. Winckler scares her so badly with his threats that she agrees to keep her mouth shut. A young inspector suspecting a fake alibi courts the young woman to get her to tell the truth.