[4][5] Unlike Nox Arcana's other releases, which are primarily instrumental with minimal narratives, these songs feature both lyrical and musical content on every track.

Michelle Belanger wrote and performed the lyrics, which draw upon ancient Enochian myths to tell a story about mythical Watcher Angels, who "abandoned Heaven for a taste of mortal love.

"[7][8] According to the Enochian legend, the Watchers (also called Grigori or "Fallen Angels") are celestial beings who were condemned to the earthly realm after uniting with mortals and sharing with them their mystical secrets.

The theme of this album was the topic of the "Blood of Angels" discussion panel at Dragoncon in 2009.

[9][10] The title track features a chant consisting of several angelic and demonic names from Christian mythology, as well as names from Jewish mythology and The Book of Enoch: Azazel, Sariel, Koshbiel, and Shamsiel, Ananel, Sethiel, Raziel, and Zaquiel.