Just another geek I guess, with a taste for poetry and Scots folksongs where everybody dies.

These are all set more or less in the same slightly alternate universe.

First is "The Year of Living Differently" which covers Snape's time after Hogwarts, his joining Voldemort and why he left.

Then "Transformation" - 2 chapters on Snape in Azkaban and after.

Then an unwritten story covering the choices he makes and the changes he undergoes from the damaged man of Transformation to the settled hopeful one of Alternate Dragon.

"If You Are Prepared" is a sidelight, and covers the only way I think he can go back to Voldemort.