Festival of Lights · Diwali
William and Hermione uncovered the truth behind Venice’s flood, contained the white dragon, and helped bring Martell’s scheme to an end. Their search for Bertha in Albania led them to Voldemort, who escaped death by possessing Theon as Peter fled with Theon’s head.
William and Hermione returned from Albania, reunited with their friends at the Quidditch World Cup, and uncovered Tom’s plans while William profited from betting and expanded his business. The arc ended as Babbling warned William that Tom planned to kill Slughorn, a fire drew Winky away, and Barty Crouch Jr. escaped.
William and his friends survived a fire, a monster attack, and a hostage crisis at the Quidditch World Cup, while William rescued the captives and helped Ireland win the final. The arc ended with Professor Babbling reporting that Tom might be in Britain and William confronting Lucius Malfoy over his debts.
William prepared for the Triwizard Tournament as Beauxbatons and Durmstrang arrived at Hogwarts, then secretly sold Champion spots to students. He ended the stretch by sweeping the names Hermione held into the Goblet of Fire.
The Goblet of Fire selected twenty-three Champions, and William prepared the students for a dangerous First Task involving dragons. Hermione and Phoebe excelled in the first group, while Ron and Malfoy struggled against a Peruvian Vipertooth as the contest continued.
After Ron’s controversial first task, William and Dumbledore investigate Voldemort’s cave and discover that Regulus Black may have stolen the locket Horcrux. As Hogwarts prepares for the Yule Ball, William confirms his relationship with Hermione, and the arc ends with them arriving at the ball while Anne and Gabrielle begin a secret plan.
William and Hermione spent the Yule Ball and Christmas together before preparing for the Second Task. Hermione finished first, but William's intervention in the Black Lake brought him into conflict with Vivian and left him troubled by her warning about Death.
William uncovered Barty Crouch Jr.’s escape and the truth behind the apparent deaths during the Third Task, then used repeated loops to investigate Merlin and bargain with Vivian. He followed the disguised Harry to Voldemort’s hideout, where Voldemort escaped after William confronted him.
William fought Voldemort through thousands of time loops, uncovered how Harry and others had died, then left the loop to rescue Harry and organize resistance. The story ended with Voldemort rebuilding his forces and ordering Karkaroff’s assassination while William and Hermione headed toward a conference near Nurmengard.
William and Hermione joined the effort to expose Voldemort’s return, then traveled to Austria to investigate Grindelwald’s escape. After finding that Grindelwald was seeking Gregorovitch, they prepared to go to Salzburg.
William and Hermione uncovered Grindelwald’s pursuit of the Elder Wand, then fought the North Sea Kraken and exposed Voldemort’s role in the Vienna attack. As the International Confederation of Wizards sent them to investigate the Giants, William reached Fridwulfa’s settlement while Hagrid and Maxime faced danger in Karkus’s tribe.
William defeated Golgomath’s Giants in the Alps, then returned to Britain with Hermione as Voldemort’s return and Ministry corruption came to the fore. Hermione was cleared at trial, but Snape’s defense left Harry humiliated, while Fudge continued tightening his grip on the Ministry.
William and his friends resisted Umbridge’s attempt to control Hogwarts, using clever countermeasures and a Halloween trap to undermine her authority. The arc ended with Umbridge trapped in a bathroom and drenched in sewage as students returned from the feast.
William’s clash with Umbridge escalated as he fought Voldemort during the Azkaban breakout and survived the island’s destruction. The aftermath left Fudge refusing to acknowledge Voldemort’s return, while Dumbledore appointed William Hogwarts’ Ancient Runes professor and Voldemort turned his attention to Harry and the Prophecy Orb.
William returned to Hogwarts as a professor, rescued Firenze, and helped expose Umbridge and bring down Fudge. With Voldemort searching for Sirius and Harry vulnerable to their connection, William and Hermione left for Durmstrang.
William and Hermione searched for Grindelwald, who left to seek Death, while the school year ended with Ravenclaw winning the Quidditch Cup. When Voldemort lured Harry toward the Department of Mysteries, William stayed behind to repair Ravenclaw’s Diadem with time magic, transforming it into a flowering branch of Elder Wood.
William helped expose Voldemort’s return, fought Death Eater attacks, and destroyed Greyback’s werewolf force. With the war temporarily quiet, William and Hermione left England for Massachusetts under false identities.
William and Hermione uncovered the Scourers’ plan to destroy New York with an Obscurus, rescued the abducted children, and stopped Graves by redirecting the blast. Back in Britain, William recruited Slughorn for Hogwarts and returned to a Diagon Alley threatened by Death Eaters and mysterious kidnappings.
William helped defend the Hogwarts Express from a Death Eater assault, then returned to Hogwarts as the school tightened its security and students settled into the new term. As William managed classes, Quidditch, and Ministry matters, Harry investigated the Half-Blood Prince and the conflict spread beyond Britain.
William investigated attacks at Hogwarts, confronted Draco, and joined Professor Babbling in a search for Slytherin’s Wand while Tom escaped prison. Back at Hogwarts, William’s biography of Voldemort stirred attention, and Slughorn’s party brought him a chance to recruit Gwenog Jones for the Chudley Cannons.