- Bowdlerise: It began with the book, which is not surprising, given the controversy of that time. In particular, the book and all its adaptation slopes play down the homosexual propensities of Anjou or the general Incest Subtext among the children of Catherine. And this is not to mention the Bartholomew's Night.
- Darkness-Induced Audience Apathy: Being the darkest part of the "Valois Trilogy" and having a complete Downer Ending, this is not surprising. In fact, this story is about how the main characters involuntarily find their death. Adaptation makes this even more depressing, adding Incest Subtext and Nightmare Fuel.
- Dawson Casting: While the ages of the characters are almost never specifically stated in the film, most of the actors are noticeably older than the people they portray with the notable exception of Virna Lisi as Catherine de' Medici:
- Isabelle Adjani and Daniel Auteuil were 40 and 44 when they played a queen and king who were historically 19.
- Alençon is specifically stated to be 17, but the actor playing him was 25.
- Charles and Guise were 22, but the actors were 39 and 38, respectively.
- Anjou was 21, and the actor playing him was 40.
- Just Here for Godzilla: Most men love this story not because of romance, but because of the St. Bartholomew's Day massacre and political intrigue.
- Ho Yay:
"You prefer him to me; that is shameful! and I detest you, Annibal! Why not be frank, and tell me you prefer him to me?[...]""Henriette, the loveliest of duchesses! For your own peace of mind, believe me, do not ask such unwise questions. I love you more than any woman, and I love La Môle more than any man."
- La Mole and Coconnas. In spades! Coconnas kisses La Môle on the lips after he refuses to abandon his friend, and after the (former) Huguenot has been beheaded.
- Charles and Henri, post hunting accident. Charles hugs Henri a lot and begs him not to go to Navarre. Later, Catherine complains that they're always going out hunting together alone.
- Foe Yay: Between Henri and Guise, Henri and Anjou, and Anjou and Guise. More than a bit Truth in Television, weirdly.
- Anjou and Guise wrestle shirtless.
- Henri and Guise get into a fight that ends with Henri kissing Guise on the lips.
- Jerkass Woobie: Though a bratty Manchild, Charles still comes across as a deeply unhappy man, so hungry for friendship that he'll latch on to anyone who shows him the slightest bit of real kindness.
- Les Yay: Marguerite and Henriette kiss on the lips in their first scene alone together.
- Signature Scene: The St. Bartholomew's Day massacre, of course.
- Tear Jerker:
- The execution of Coconnas and La Môle, innocent scapegoats. Prior to that, Coconnas seeing the broken La Môle and refusing to flee without him.
- The death of Charlotte de Sauve. She lingers on until Henri arrives, so she can kiss him and say she loves him one last time.
- The death of Charles IX, too. Despite being a Manchild, he was also an incredibly lonely man who latched onto anyone who showed him the least bit of kindness. He didn't deserve to have such a Big, Screwed-Up Family who planned for his death. His own birth mother definitely didn't mourn him as much as his nurse did.
- Trope Maker: For Evil Matriarch, Royally Screwed Up and at least one of the classic Trope Codifier for Star-Crossed Lovers.
YMMV / La Reine Margot