Harry Potter and the Chamber of Secrets · Chapter 16
Ginny Weasley Abducted into Chamber
Ginny is taken into the Chamber of Secrets; Harry and Ron force a fleeing Lockhart to accompany them, and Harry opens the entrance with Parseltongue after discovering the basilisk clue.
Outcome
Harry ventures alone into the Chamber to rescue Ginny, confronting the true heir of Slytherin.