Hogwarts After Potter

Dursley and Slughorn enter a partnership to publish a highly revised version of Advanced Potionmaking. Dursley begins translating Snapes notes and Slughorn brews the potions. Then they test them.

Dursley goes home for the Christmas holiday. His family has a surprise visit from a young lady friend.

Dursley gets re-assigned to Hufflepuff where he entertains Hufflepuff residents and attends Slughorn's annual Christmas party. Slughorn reveals a business opportunity to Dursley.

Slughorn brews an antidote to the Love Potion that Dursley brewed. To safeguard his ownership of Snape's potions text, Dursley, Wendt, and Filch trap Slughorn in attempted theft .

Dursley is punished for brewing Snape's Love potion by being banished to Professor James Wendt's office until the love potion is reversed by the potion brewed by Professor Slughorn. The question remained, does Pamela still love Dursley.

Gilderoy Lockhardt puts in an appearance at the Halloween Party and the new improved Love Potion is tested. 

Dursley makes a deal with another student. They will brew a love potion together. Dursley will get some. Knowland will get some. Knowland will use it on Pamela at the Halloween Ball.

Dursley finds his desk and a mysterious potions text in the Room of Requirement.

Dursley discovers the Room of Requirement, learns a spell, and gets a library card.

Dudley Dursley attends a staff party and the beginning of term banquet.