Chapter Summaries

After teaching and healing the second-years, Roy found Aisling upset that he had developed a potion with Professor Snape without asking her to help. He reassured her that she was still his lifelong rival, and she left him a Christmas present: instructions for learning Grindelwald's Blue Fiendfyre Curse.

• Roy healed the second-years' practice injuries with green healing smoke and dismissed the class without assigning homework.
• Aisling helped Roy clean the classroom, using her modified blue Fiendfyre to burn away wastepaper, while Roy showed he could cast black Fiendfyre.
• Aisling admitted she had cheated and asked whether she had hurt Roy, leaving him puzzled by her unusual concern.
• Aisling asked why Roy had not invited her to help develop Guardian Potions with Professor Snape, fearing he thought she was holding him back.
• Roy called Aisling his lifelong rival, lifting her spirits, and she gave him instructions for learning Grindelwald's Blue Fiendfyre Curse as a Christmas present.

Roy and Snape completed the Guardian Potions, which Roy had made to save his younger sister Mia. Unable to find anyone awake to celebrate with, Roy met Aisling at the field, where they shared drinks and toasted people they hated.

• Roy visited Snape's office and learned that the Guardian Potions was nearly finished.
• Roy and Snape completed the brewing process, and Snape confirmed that the potion was successful.
• Roy left the office celebrating, searched the Castle for someone to share his joy with, then brought drinks and snacks to the field.
• Aisling startled Roy while he was eating, dropped his sandwich, and joined him after he explained the potion's completion.
• Roy and Aisling drank together and shouted toasts to Tiago and Elias Thorn.

Dumbledore showed Roy the necklace Nicolas Flamel crafted for a protective magic and explained how to activate it. He confirmed that Roy could protect Mia with the spell because she had no surviving blood relatives and Roy was the person closest to her.

• Fawkes delivered Dumbledore’s note to Roy at the Special Operations Office, and Roy went to meet him.
• Dumbledore explained how Roy had to activate the necklace’s eighteen pairs of runes and apply the potion mixed with blood.
• Roy asked whether the protective magic would work for Mia because they were not related by blood.
• Dumbledore gave Roy the Sallow Family Genealogy, showing that Mia was the only surviving member of her family.
• Dumbledore confirmed that Roy was now the person closest to Mia.