Season 1 Investigation Discovery , 2008 Season 2 Investigation Discovery , 2009 Season 3 Investigation Discovery , 2010 Season 4 Investigation Discovery , 2011 Season 5 Investigation Discovery , 2012 Season 6 Investigation Discovery , 2013 Season 7 Investigation Discovery , 2014 Season 8 Investigation Discovery , 2015 Season 9 Investigation Discovery , 2016 Season 10 Investigation Discovery , 2017