The trial did not appear in any episode. But since this is the trial that cause Marie Antoinette’s death, it is described briefly here.
It happened when Marie Antoinette was 37 years old.
The first witness, Laurent Lecointre, formerly a linen-draper, was a deputy to the Convention, second in command of the National Guard in Versailles after the downfall of the royal. He testified for two hours on the feasts and orgies from 1779 to 1789 that caused French finance in trouble.
As you can judge the validity of testimony from a formerly linen-draper.
Other accuses were similar to that, such as Marie Antoinette controlled Louis XVI by stopping him not to read a speech to people’s representatives, and her decision on assassinate half of the people’s representatives.
The relationship with Fersen, of course, was one of the accusation.
Her identity as an Austria princess also put her into disadvantage on betrayal of France.
Others like The rise of Mme de Polignac social status, Mme la Motte and Necklace Diamond Affair were also brought up in the trial.
Although all political events were against Marie Antoinette, but there was not any document. The court could not prove her treason. The court was just able to shown Marie Antoinette, more of an Austria princess than a queen of France, by following the orders from her mother and brother, transmitted by Mercy.
However, the jury’s declaration was:
the accused be condemned to death, in accordance with Article One of the first section of the first chapter of the second part of the penal code, which reads: "All intrigue, all intelligence with the enemies of France tending either to facilitate their entry into the territories of the French Empire, or to deliver up to them towns, fortresses, ports, vessels, magazines or arsenals belonging to France, or to furnish them aid in soldiers, money, food or munitions, or to favor in any manner whatever the progress of their armies on French territory, or against our forces by land or sea, or to undermine the loyalty of officers, soldiers and other citizens towards the French Nation, shall be punished by death".