On this episode of Supernatural…

Crowley convinces Dean to help him find the first blade, the weapon that can kill the knights of Hell.

Using John Winchester’s journal and the help of another hunter, the duo find Cain, owner of the blade.

After some convincing, Cain transfers the mark of Lucifer over to Dean as the blade only works with the mark.

Dean discovers Crowley played him in order to get the blade.

Castiel tries to extract remnants of Gadreel’s grace inside Sam in order to track the angel.

Unfortunately, there isn’t enough, but the two remain determined to stop him and Metatron.