Arc 22The High Tower and Hidden Memories
Will expanded the High Tower, investigated werewolf magic through dangerous experiments, and planned to force Umbridge out of Hogwarts. Harry saw Snape’s memories of James and Will, leaving him troubled and prompting Dumbledore to stress the importance of Occlumency.
- Will unveiled the High Tower’s new floors and meeting room, and its members approved Astoria Greengrass, Justin Finch-Fletchley, Terry Brown, and Cho Chang while rejecting Colin Creevey.
- Draco told Will that the Greengrass family was helping Voldemort’s followers plan an operation, and Will agreed to investigate while advising Draco to study healing magic.
- Umbridge began inspecting classes and challenged McGonagall and Lupin, while Will taught students and Lupin led practical combat training.
- Will captured werewolves and experimented on their memories and magic, eventually finding that Sectumsempra enhanced with Soul Annihilation could cut a magical structure.
- After Harry dreamed of Voldemort and a snake, Dumbledore asked Will to determine whether the snake was a Horcrux, and Will suspected it was Nagini.
- Will told Hermione to expose Umbridge’s use of Dark Magic on Harry, received Voldemort’s orders through Draco, and used an improved curse to isolate werewolf venom magic without cutting it away.
- Harry entered Snape’s Pensieve and saw James and Sirius bully Snape, then watched Snape pull him from a memory involving Will and warn that Will’s path could lead to death.
- Dumbledore confirmed James had bullied Snape but later changed, arranged Occlumency lessons for Harry, and warned Will that Harry might reveal what he had seen, and Will declined to mend Harry and Snape’s relationship.