Thin Line was a Harry Potter fanfiction archive opened in 2001, with a focus on Severus Snape/Sirius Black, that later expanded to include pairings with Severus Snape and any male members of the Black family. The archive is being imported to the Archive of Our Own (AO3).
For more information about the move to the AO3, please see the announcement post.
Read (or edit!) the Thin Line page on Fanlore!