Book of the Law (Earth-Prime)

"He had this tome of secrets called the "Book of the Law." In it, Crowley detailed these alien encounters and spells that these aliens taught him."

- Astra Logue

The Book of the Law is a tome of secrets written by Aleister Crowley.

History
For the most of his life, Aleister Crowley searched for the Fountain of Imperium and wrote the Book of the Law.

Years later, John Constantine got hold of the book and attempted to use it to locate Sara Lance.