Vol. 4The Lost Year
Sean uncovered Grindelwald’s plans, investigated the lost day and the Returners, and helped the younger Grindelwald reconnect with his older self. After the Time Incident shifted the world from 1993 to 1994 while everyone’s memories remained unchanged, Sean returned to Hogwarts to help teach Transfiguration.
- Sean learned that Grindelwald had founded Merlin's Weekly Prophet and planted a Guard Corps mole, then rescued Hermione and Buckbeak from Dementors as prison breaks and attacks on Muggles escalated.
- Sean led students in defying Umbridge’s restrictions, and she began foaming at the mouth during dinner after targeting Daisy.
- Sean killed Little Aiken, took his identity, and destroyed the Aiken manor before Grindelwald claimed responsibility, then gained partial authority over the Room of Requirement from Rowena Ravenclaw’s statue.
- Stephanie revealed that October 27 had lasted only four hours and that Grindelwald had tasked her with monitoring Sean, while Sean investigated the time-travel accident and the Returners.
- Sean helped defend Hogwarts and Hogsmeade from attackers tied to the Returners, then watched Grindelwald win the Qilin Election after turning the crowd against the Guard Corps.
- Sean concluded that Grindelwald had traveled from 1996 to 1899 and found the younger Grindelwald, then agreed to impersonate the unreachable older Grindelwald.
- Sean learned from Baron Skinner how betrayal could break the Blood Pact and discovered that Qilin’s Blood could bridge Grindelwald’s younger and older selves.
- Sean witnessed the Time Incident shift the world from 1993 to 1994, safeguarded a memory for Grindelwald, and returned to Hogwarts to help McGonagall teach Transfiguration.