Desc: Sag' die Wahrheit: Directed by Helmut Weiss. With Gustav Fröhlich, Mady Rahl, Ingeborg von Kusserow, Sonja Ziemann. Peter's fiancee Maria is chronically lying and hides her little affairs. To change this, Peter bets that he is going to tell everyone the truth for 24 hours. The consequences are catastrophic.