Christmas Black Marble Christmas cards 2019 Black Marble Brigade and the Ultimate Christmas Odyssey 2018 Black Marble Brigade and the Reckless Necklace Loot Pursuit 2017 Black Marble Brigade and the larceny in the library 2016 Server Room 13 2015 Step into Santa 2014 Black Marble Brigade and the Christmas Cookery Conundrum 2014 Extra Christmas Recipes 2013 Shape-shifting Santa and the Merry Mutation Machine 2013 2012 The Fight Before Christmas! 2012 2011 A Cold-Call Christmas 2011 2010 Going Postal! 2010 2009 Yule Time Travel 2009 2008 Merry Christmas 2008 2007 Christmas Chaos! 2007
