s ▁ 7 ▁( 1 9 7 8 – 8 1 ). ▁ ▁P itch ed ▁by ▁Nation ▁as ▁" the ▁D irty ▁Do zen ▁in ▁space ", ▁Bla ke ' s ▁ 7 ▁was ▁originally ▁cent red ▁around ▁r igh te ous ▁freedom ▁f ighter ▁Ro j ▁Bla ke , ▁his ▁battle ▁with ▁a ▁cor rupt ▁Gal actic ▁Federation ▁and ▁the ▁rag - tag ▁group ▁of ▁pir ates , ▁crim inals ▁and ▁sm ug gl ers ▁who ▁are ▁rel uct antly ▁forced ▁to ▁work ▁with ▁him ▁after ▁an ▁escape ▁from ▁a ▁prison ▁ship . ▁Running ▁for ▁four ▁seasons , ▁the ▁early ▁evening ▁series ▁had ▁a ▁hard ▁edge . ▁The ▁moral ▁ambigu ity ▁of ▁the ▁leading ▁characters ▁made ▁them ▁interesting , ▁and ▁as ▁with ▁Do om watch ▁it ▁was ▁not ▁afraid ▁of ▁shock ing ▁the ▁audience ▁by ▁killing ▁off ▁leading ▁characters , ▁clim ax ing ▁by ▁w ip ing ▁out ▁the ▁entire ▁crew ▁in ▁its ▁final ▁episode . ▁ ▁I TV ▁was ▁continu ing ▁to ▁produce ▁science ▁fiction ▁in ▁this ▁era . ▁Ke en ▁to ▁catch ▁some ▁of ▁the ▁young ▁audience ▁who ▁followed ▁Doctor ▁Who , ▁some ▁of ▁the ▁I TV ▁companies ▁sought ▁to ▁create ▁their ▁own ▁youth - orient ed ▁genre ▁program mes , ▁such ▁as ▁the ▁ 1 9 7 0 ' s ▁cult ▁classic ▁sci - fi ▁drama ▁series , ▁Times lip ▁( 1 9 7 0 ), ▁and ▁the ▁original ▁The ▁Tom orrow ▁People ▁( 1 9 7 3 – 7 9 ). ▁Although ▁it ▁presented ▁some ▁intr igu