I've just spent the last 4 hours re-reading one of my favorite stories from one of my favorite authors. If you haven't read it before or haven't read it in a while, I highly recommend it.

Title: Come What May
Author: florida_minxie
Pairing: Harry/Draco, Harry/Severus, Harry/Draco/Severus implied triad
Summary: Pushed into a corner Severus Snape handles it the only way he knows how… he kills Albus Dumbledore. Harry Potter returns to the castle determined to find the power to kill not only Voldemort but also the man who took his mentor away from him, Severus Snape. Instead, he overhears a damning conversation between two people he trusted. Finally using his innate Slytherin cunning, he digs deeper and finds not everything is as it appears.
Will it change his loyalties or just the way he fights?

Brings me to tears each time I read it.