The Citadel is an archive of information for George R.R. Martin's A Song of Ice and Fire.
New to the series? Read our spoiler-free review of A Game of Thrones.
Melisandre’s face darkened. "That creature is dangerous. Many a time I have glimpsed him in my flames. Sometimes there are skulls about him, and his lips are red with blood."
The skulls, featured in others of Melisandre's visions regarding Jon Snow, appear to relate to death. The lips red with blood, on the other hand, seem hard to interpret.
The Westeros network consists of several different sites, including a forum and a wiki, for all your A Song of Ice and Fire needs.