One or the Other of Us

A struggling student, Ziegenhals discovers that a respected professor at a local university copied his doctoral dissertation from an American academic and decides he can blackmail him. Professor Kolczyk initially agrees, but swears to fight back and halt the payments to his blackmailer soon. In a bid to find out more about Ziegenhals, Kolczyk befriends his roommate Miezi, who is soon murdered. Ziegenhals and Kolczyk are soon the prime suspects in the murder, but continue to try and discover information about each other to aid their own cause.