<Table> <Tr> <Th> # </Th> <Th> Title </Th> <Th> Date </Th> <Th> ISBN </Th> </Tr> <Tr> <Td> </Td> <Td> Diary of a Wimpy Kid </Td> <Td> April 1 , 2007 </Td> <Td> ISBN 978 - 0 - 8109 - 9313 - 6 </Td> </Tr> <Tr> <Td colspan="11"> The introduction to the series introduces the protagonist , Greg Heffley , his best friend Rowley , his middle school problems , Halloween , and the Cheese Touch . </Td> </Tr> <Tr> <Td> </Td> <Td> Rodrick Rules </Td> <Td> February 1 , 2008 </Td> <Td> ISBN 978 - 0 - 8109 - 9473 - 7 </Td> </Tr> <Tr> <Td colspan="11"> Greg must stop Rodrick from revealing the secrets that had happened last summer . </Td> </Tr> <Tr> <Td> </Td> <Td> The Last Straw </Td> <Td> January 13 , 2009 </Td> <Td> ISBN 978 - 0 - 8109 - 7068 - 7 </Td> </Tr> <Tr> <Td colspan="11"> When Greg 's father threatens to send Greg to a military academy , Greg must find a way to prevent this from happening . </Td> </Tr> <Tr> <Td> </Td> <Td> Dog Days </Td> <Td> October 12 , 2009 </Td> <Td> ISBN 978 - 0 - 8109 - 8391 - 5 </Td> </Tr> <Tr> <Td colspan="11"> Summer is here , but when the family has not that much money to go to the beach ( money is tight at that time ) , it might not be the best summer ever . </Td> </Tr> <Tr> <Td> 5 </Td> <Td> The Ugly Truth </Td> <Td> November 9 , 2010 </Td> <Td> ISBN 978 - 0 - 8109 - 8491 - 2 </Td> </Tr> <Tr> <Td colspan="11"> Greg is growing up , and he will have to face the challenges of this period ( like changing dentists , and a school lock - in ) . </Td> </Tr> <Tr> <Td> 6 </Td> <Td> Cabin Fever </Td> <Td> November 15 , 2011 </Td> <Td> ISBN 978 - 1 - 4197 - 0223 - 5 </Td> </Tr> <Tr> <Td colspan="11"> The family is stranded in the house as snow begins to fall . </Td> </Tr> <Tr> <Td> 7 </Td> <Td> The Third Wheel </Td> <Td> November 13 , 2012 </Td> <Td> ISBN 978 - 1 - 4197 - 0584 - 7 </Td> </Tr> <Tr> <Td colspan="11"> The Valentine 's Day dance is coming up , and Greg has no one go with . But when Michael Sampson ( Abigail 's date ) will not be going , things turn around . </Td> </Tr> <Tr> <Td> 8 </Td> <Td> Hard Luck </Td> <Td> November 5 , 2013 </Td> <Td> ISBN 978 - 1 - 4197 - 1132 - 9 </Td> </Tr> <Tr> <Td colspan="11"> Greg 's friend count is dropping as Rowley now has a girlfriend , named Abigail ( continuing the last book ) . </Td> </Tr> <Tr> <Td> 9 </Td> <Td> The Long Haul </Td> <Td> November 4 , 2014 </Td> <Td> ISBN 978 - 1 - 4197 - 1189 - 3 </Td> </Tr> <Tr> <Td colspan="11"> This is the family 's second summer trip , but instead , it 's a road trip . But with the Heffleys , you know what to expect from this disaster . </Td> </Tr> <Tr> <Td> 10 </Td> <Td> Old School </Td> <Td> November 3 , 2015 </Td> <Td> ISBN 978 - 1 - 4197 - 1701 - 7 </Td> </Tr> <Tr> <Td colspan="11"> The neighborhood is going to cut electricity for the weekend , and as the family 's car has a fender bender , it forces Greg to go to the farm trip . Will Greg survive the electricity - free days ? </Td> </Tr> <Tr> <Td> 11 </Td> <Td> Double Down </Td> <Td> November 1 , 2016 </Td> <Td> ISBN 978 - 1 - 4197 - 2344 - 5 </Td> </Tr> <Tr> <Td colspan="11"> Greg 's mom wants him to do something else than video games , so he makes a movie in collaboration with Rowley and joins the music program . </Td> </Tr> <Tr> <Td> 12 </Td> <Td> The Getaway </Td> <Td> November 7 , 2017 </Td> <Td> ISBN 978 - 1 - 4197 - 2545 - 6 </Td> </Tr> <Tr> <Td colspan="11"> Instead of celebrating the holidays at home , Greg and his family head on a tropical vacation to a resort . But what first starts as an relaxing trip , later turns into a Christmas nightmare . Will Greg be able to turn this vacation around ? </Td> </Tr> </Table>
how many books are in the diary of a whimpy kid series
12