Season 1 CTV Sci-Fi Channel Season 2007 CTV Sci-Fi Channel Season 2008 CTV Sci-Fi Channel , 2008 Season 2009 CTV Sci-Fi Channel , 2009 Season 2016 CTV Sci-Fi Channel , 2016 Season 2017 CTV Sci-Fi Channel , 2017 Season 2018 CTV Sci-Fi Channel , 2018
