“Mysticism and the supernatural are embedded in the show - it's called 'Da Vinci's Demons' for a reason, and it's not just metaphorical.”
Source : "David S. Goyer Explains His ‘Graphic Novel’ Approach to Renaissance Intrigue in ‘Da Vinci’s Demons’". Interview with Alison Willmore, www.indiewire.com. April 9, 2013.