The Solomon Key is the working title of an unreleased novel currently in progress by Dan Brown, author of several novels, most prominently Angels & Demons and The Da Vinci Code. [3] According to current information, The Solomon Key will be the third book involving the fictional Robert Langdon, a Harvard University professor. No release date has been announced.
See also
Key of Solomon, a "white magic" grimoire attributed to King Solomon's wives' pagan religious traditions [4]