The Knights of Hell as detailed in the notes.

These notes contained information Tara and John Winchester gathered from a captured protégé demon of Abaddon.



The First Blade locator spell.

The notes contained descriptions of the Knights of Hell. The knights were described as devised to be very pure and very strong. The notes indicated that the protégé demon believed the archangels used the First Blade to kill the knights. The notes also contained the spell to locate the First Blade.


The notes were in Tara's possession. The location of the notes upon Tara's death is unknown.