7 ▁establish ments ▁in ▁Canada ▁Category : Syn agog ue ▁buildings ▁with ▁dom es <0x0A> </s> ▁En light en ment ▁is ▁the ▁fifth ▁serial ▁of ▁the ▁ 2 0 th ▁season ▁of ▁the ▁British ▁science ▁fiction ▁television ▁series ▁Doctor ▁Who , ▁which ▁was ▁originally ▁broadcast ▁in ▁four ▁twice - week ly ▁parts ▁on ▁BBC 1 ▁from ▁ 1 ▁to ▁ 9 ▁March ▁ 1 9 8 3 . ▁It ▁was ▁the ▁ 1 2 7 th ▁serial ▁of ▁the ▁series , ▁and ▁was ▁written ▁by ▁Barbara ▁C leg g ▁and ▁directed ▁by ▁F iona ▁C um ming , ▁making ▁it ▁the ▁first ▁serial ▁to ▁be ▁both ▁written ▁and ▁directed ▁by ▁women . ▁ ▁In ▁the ▁serial , ▁the ▁al ien ▁time ▁trav eller ▁the ▁Fif th ▁Doctor ▁( Peter ▁Dav ison ) ▁and ▁his ▁compan ions ▁T eg an ▁J ov anka ▁( Jan et ▁Field ing ) ▁and ▁Vis lor ▁T url ough ▁( Mark ▁Str ick son ) ▁encounter ▁a ▁group ▁of ▁god - like ▁imm ort als ▁who ▁are ▁racing ▁historical ▁Earth ▁sail ing ▁vessels ▁through ▁space , ▁cre wed ▁by ▁humans ▁they ▁had ▁pl uck ed ▁out ▁of ▁time , ▁in ▁an ▁attempt ▁to ▁win ▁the ▁prize ▁of ▁en light en ment . ▁T url ough ▁is ▁under ▁the ▁control ▁of ▁the ▁Black ▁Guardian ▁( Val ent ine ▁Dy all ), ▁but ▁strugg les ▁with ▁the ▁Guardian ' s ▁orders ▁to ▁kill ▁the ▁Doctor . ▁En light en ment ▁is ▁the ▁third ▁of ▁three ▁lo os ely ▁connected ▁serial