Dumbledore's Army and the Year of Darkness, by Thanfiction. (R)

[thady.livejournal.com]

Fandom: HARRY POTTER
Pairing: Gen (although there are canon pairings mentioned, especially Hannah/Neville)
Length: ~ 248,000 words
Author on LJ: thanfiction
Author Website: Author's profile at fanfiction.net
Why this must be read:

One of the questions that truly plagued me while reading Deathly Hallows was what happened at Hogwarts. This story answers this question so satisfyingly that I incorporated it as my personal canon.

This is an engrossing read, canon compliant, with great characterization of all the characters, especially Neville. But all the other (minor) characters feel very real too. A truly engrossing read, I could barely put it down.

Dumbledore's Army and the Year of Darkness