PostHBP, Albus and Severus meet in the most unlikely of places. HBPFixit.
Albus, do you realize that you're having tea with the Dark Lord?"
"He is standing behind his desk, leaning toward me with something in his eyes that doesn't seem to belong there – malice."
Of Albus, Severus, and a pensieve.
Slash, AD/SS. Series of short, one-scene stories featuring Severus and Albus. [Stories: Crimson Compulsion, Arcanus Quaerere]
Severus loses his voice to the Cause. (Slash: SS/AD. Complete.)
Severus adapts to a life in which he is not alone. (Sequel to Beginning to Rest. Slash: SS/AD. Complete.)
Feelings revealed in the midst of battle. (SS/AD, Slash, Complete.)
Severus Snape releases yet another secret upon the Headmaster of Hogwarts School of Witchcraft and Wizardry. (Complete. No Slash...? How odd.)
Snape manages to bring an important message to Dumbledore after Voldemort discovers his true loyalties. (Complete. Slash. SS/AD.)
Mr. Hood is the master of Holiday House, and he's in search of an apprentice. He has never fed on a wizard's soul, and when Severus shows up, the Dark Magic of the House appeals to him.
Severus Snape has long been cursed by the Dark Lord, but now the effect is unbearable. Eventual Slash.