Season 1 ABC , 2012 Watch now Season 2 ABC , 2012 - 2013 Season 3 ABC , 2013 - 2014 Watch now Season 4 ABC , 2014 - 2015 Watch now Season 5 ABC , 2015 - 2016 Season 6 ABC , 2016 - 2017 Season 7 ABC , 2017 - 2018 Season 8 ABC , 2021