book 2/6 mirror parallels
kids getting attacked by some mysterious force, one of whom is a member of harry's trio
harry suspects malfoy
harry overhears malfoy having a conversation in borgin and burke's
there is an evil book
there is a new teacher who is interested in fame/famous people
afaik book 2 is the first time we see a horcrux on page (not counting harry) and this is the book where they're explained
book 2 is also the first time we see a Hogwarts’ founders relic on page and this is the book where a ton more are mentioned
harry x ginny is plot important
we see young voldemort as/in a memory
(a lot of these parallels are explicitly made in the text this time)







