From All Movie Guide  
M.G.M.'s opulent costume drama Marie Antoinette marked a return to the screen after a two-year absence for reigning Queen of M.G.M. Norma Shearer. Shearer plays the title role of an Austrian princess who is married off to Louis Auguste (Robert Morley), the Dauphin of France. Marie, by becoming the Dauphine, finds herself plopped smack in the middle of French palace intrigue between Louis's father King Louis XV (John Barrymore) and his scheming cousin, the Duke of Orleans (Joseph Schildkraut). With Louis unable to consummate his marriage to Marie, she takes to holding elaborate parties and gambling her fortune away. In a casino, she meets the handsome Count Axel de Fersen (Tyrone Power) and they have an affair. But when Louis XV dies and Louis becomes King Louis XVI, Fersen takes his leave, telling her that he could carry on an affair with a dauphine but not the Queen of France. Marie vows to be a great queen and remain loyal to her king. But the Duke of Orleans is plotting against Louis XVI, financing the revolutionary radicals. When the monarchy is overthrown, Louis and Marie are thrown into prison, awaiting execution. But when word gets back to Fersen, he travels back to France in an attempt to rescue Marie. Paul Brenner