Back in Moaning Myrtle's bathroom, Myrtle expresses her disappointment in Harry's survival, amusing Ron. Ginny, though, is still upset, so Fawkes leads them all to [McGonagall's office].

Harry arrives in [McGonagall's office] with Ron, Ginny, Lockhart, and Fawkes, and there he finds [Dumbledore], McGonagall, and the Weasleys overcome with emotion.

Harry tells the story of everything that happened in the Chamber of Secrets, including Riddle's use of a diary to enchant Ginny. [Dumbledore] then sends Ginny to the hospital wing with the Weasleys and McGonagall to ask the kitchens for a feast, leaving him with Harry and Ron.

[Dumbledore] gives Harry and Ron two hundred points each and learns from Ron that Lockhart's memory has been erased. He then has Ron take Lockhart to the hospital wing so he can speak to Harry alone.

[Dumbledore] talks to Harry about Tom Riddle and Voldemort, and shows him [Gryffindor's sword] to prove that he is a true Gryffindor.

Lucius Malfoy arrives with Dobby, irate that [Dumbledore] has returned. [Dumbledore] pointedly mentions that he knows Lucius was the source of [Riddle's diary]. Malfoy turns and storms out.

As Lucius Malfoy departs, Harry grabs the diary, wraps it in his dirty sock, and follows. He gives it to Lucius who rips the sock off and furiously threatens Harry, but in the process inadvertently throws the sock to Dobby and frees him. Dobby throws Lucius across the hall and he promptly gets up and storms off for good.

Dobby thanks Harry for his freedom, and explains his attempts at telling Harry what had been going on, before disappearing.