The following works particularly inspired me during the writing of this book:
Beamon, Sylvia P., 2009, Royston Cave: Used by Saints or Sinners? (The Temple Publications).
Beresiner, Yasha, 2006, The City of London: A Masonic Guide (Lewis Masonic).
Churton, Tobias, 2012, The Mysteries of John the Baptist: His Legacy in Gnosticism, Paganism, and Freemasonry (Inner Traditions).
Gilbert, Adrian, 2003, The New Jerusalem. Rebuilding London: The Great Fire, Christopher Wren and the Royal Society (Corgi).
Hogan, Timothy, 2015, The Way of the Templar: A Manual for the Modern Knight Templar (Self-published).
Jennings, Humphrey, 2012, Pandaemonium, 1660-1886 (Icon Books)
Long, David, 2007, Tunnels, Towers & Temples: London’s 100 Strangest Places (History Press).
Robinson, John L., 1989, Born in Blood: The Lost Secrets of Freemasonry (M. Evans).
And finally, a number of the biblical quotations referenced in this novel are taken from The Holy Bible, New International Version, 1996, (Zondervan) and from The Authorized (King James) Version, reproduced by permission of the Crown’s patentee, Cambridge University Press.