This beautifully presented book is the latest full length work from publisher Ixaxaar and from author N. A-A. 218, magister of the Templum Falcis Cruentis. While N. A-A. 218's recent output in the two volumes of Liber Falxifer has focussed on the Qayinite mysticism of the Templum Falcis Cruentis, The Book of Sitra Achra feels very much like a return to the roots of the affiliated Temple of the Black Light and its previous incarnation as the Misanthropic Luciferian Order. Although I have not read Liber Azerate, the MLO's earlier and much sought after work on these themes, this book does feel like an update to that grimoire. The eleven-headed dragon Azerate forms the backbone of much of this book and the narrative describes how that particular name was received and identified as the true name of the God of Sitra Achra (the Other Side) in what one assumes was the formative days of the order. The same workings also provided a sign, the Eleven-Angled Seal, which is used as a gateway to the Sitra Achra.