Mayerling 1936 is a French historical drama film directed by Anatole Litvak and produced by Seymour Nebenzal from a screenplay by Marcel Achard, Joseph Kessel, and Irma von Cube, based on the 1930 novel Idylls End by Claude Anet.
Vienna is disturbed by protestors agitating for political change. Crown Prince Rudolph is arrested at a meeting. His father Emperor Franz Joseph insists he get married and settle down. Rudolph reluctantly agrees.Five years later, Rudolph has become an unhappy playboy. On the night of his wedding anniversary he meets Baroness Marie Vetsera and they fall in love. ........
Source: Wikipedia