Infiltration of the French Ministry of Magic

"He needs to control his temper!"

- Porpentina Goldstein

There was an infiltration of the Ministry of Magic in 1927, during the height of the Global wizarding war. Newton Scamander and Porpentina Goldstein snuck inside the Ministry in order to discover the real identity of Credence Barebone.

Background information
When Gellert Grindelwald began rallying his supporters, Newton Scamander came to the conclusion that he should go with Porpentina Goldstein to the French Ministry of Magic to find a box, which would tell them who Credence Barebone really was.

The infiltration
In order to enter the Ministry without being recognised, Newt drank Polyjuice Potion containing the hair of his brother Theseus Scamander, allowing him to temporarily take his form. When the potion ceased to work and Newt was reverted to his true form, they were discovered by Theseus, who happened to actually be in Paris in a delegation, including Leta Lestrange and Torquill Travers, due to the rumours of Newt's potential trip to Paris. He chased them, but Tina reacted more quickly, striking him with a non-verbal Stunning Spell and tying him up to a chair, remarking that he needed to control his temper. Overjoyed, Newt claimed that might have been the best moment of his life. Later, Newt and Tina introduced themselves to Melusine, the Ministry of Magic employee, as Theseus and Leta. When they went to the Records Room to find the Lestrange family box, they were covered by Leta Lestrange, who was searching for the box too. They found out that the box was taken to the Lestrange Mausoleum, but Melusine knew Newt and Tina had lied about their identity and sent the Matagots, creatures responsible for defending the French ministry, after them and Leta. Newt told them that if they did not fight the Matagots they wouldn't hurt them, but Leta had already attempted to stun one, which caused it to multiply. When a hoard of angry Matagots began to chase them, Newt sent Leta and Tina into the suitcase and with the help of the Zouwu, that he had saved earlier he fled to the Pere Lachaise Cemetery.

Aftermath
When Tina and Leta came out and Newt packed Zouwu inside the suitcase, they all head to the Lestrange tomb and Leta found the Lestrange box which was taken, but they were not alone. They crossed paths with Jacob, Yusuf, Credence and Nagini. Leta stopped Yusuf, her half-brother, from killing Credence, who thought he was her other half-brother, Corvus Lestrange. Showing a box with her family tree she finally confessed to accidentally causing the death of Corvus, proving he and Credence were not the same person and that she had no idea who Credence actually was. Newt told her that it was not her fault that Corvus died, to which she responded that he had "never met a monster [he] couldn't love".

When the door to next chamber opened, Newt and the others joined Gellert Grindelwald's Paris rally. Despite managing to reconcile with Tina, Newt was powerless to stop Grindelwald from delivering a rousing speech, sharing a vision, threatening Paris with cursed fire and collecting Queenie Goldstein, Credence and his followers to strike against Hogwarts (thus ridding himself of his nemesis, Albus Dumbledore) and the whole Wizarding and non-magical worlds. During the battle that took place between Newt and Grindelwald, Scamander tragically lost his beloved Leta Lestrange, which finally compelled him to openly join the fight against the most dangerous dark wizard of his age.