The Da Vinci Code
From ReformedWiki.org, the wiki for Reformed Christianity
The Da Vinci Code is a novel by American author Dan Brown.
It is notable for spreading historical inaccuracies about Early and Medieval Christianity, such as that Emperor Constantine was a lifelong pagan, that paganism was feminist, or that the Council of Nicaea rejected Gnosticism in favour of Orthodoxy, all of which are completely false.