• In a closed urban fantasy, the magical world is secret and no one knows about it. In an open urban fantasy, everyone knows about it. So with a closed fantasy, you have to figure out how the world keeps itself secret, and with an open one, you have to figure out how knowledge of magic has altered the world we know.

    "Author Interview: Cassandra Clare on City of Bones (Book One, The Mortal Instruments)". Interview with Cynthia Leitich Smith, March 8, 2008.