Question: what is the first book of the mortal instruments series
Answer: City of Bones ( March 27 , 2007 ) City of Ashes ( March 25 , 2008 ) City of Glass ( March 23 , 2009 ) City of Fallen Angels ( April 5 , 2011 ) City of Lost Souls ( May 8 , 2012 ) City of Heavenly Fire ( May 27 , 2014 )