The trio walks to [Hogsmeade] - after a brief run-in with Filch's Secrecy Sensor - through a bitter wind, and past a boarded-up [Zonko's Joke Shop].

Horace Slughorn corners Harry in [Honeydukes] to invite him to his next event. Ron, though, is disappointed that his friends are both invited but not him.

While walking to the [Three Broomsticks], Harry encounters Mundungus Fletcher - and discovers that he's been stealing objects from [number twelve, Grimmauld Place]. Mundungus manages to get away, and a depressed Tonks appears to try to calm Harry down.

Harry, Ron, and Hermione sit briefly in the [Three Broomsticks], discussing Mundungus and [Madam Rosmerta], before deciding to head back to school.

On the walk back to school, the trio watches as an [Imperiused] Katie Bell gets into an argument with her friend [Leanne] and is hurt by the [cursed necklace]. Harry then grabs Hagrid, who takes Katie up to the castle.

Hermione and Harry quiz [Leanne] about the details of what happened to Katie Bell and realize the necklace is cursed and came from [Borgin and Burkes]; they then set off for the castle with it to show it to Madam Pomfrey.

Suspecting the [cursed necklace] was given to Katie by Malfoy, Harry tells his suspicions to Professor McGonagall but is told Draco wasn't in [Hogsmeade].

Harry, Ron, and Hermione discuss the [cursed necklace] that injured Katie Bell - Harry is determined that Malfoy is behind it, but the others are skeptical.