ant ▁of ▁his ▁aff lic tion . ▁Great ▁focus ▁is ▁also ▁placed ▁on ▁Elizabeth ' s ▁tur mo il ▁over ▁the ▁situation ▁with ▁Mary , ▁Queen ▁of ▁Sc ots , ▁who ▁is ▁executed ▁towards ▁the ▁end ▁of ▁the ▁episode , ▁an ▁act ▁which ▁Elizabeth ▁is ▁shown ▁express ing ▁great ▁rem or se ▁in ▁private . ▁The ▁imp ending ▁invasion ▁of ▁the ▁Spanish ▁Arm ada ▁is ▁de alt ▁with ▁fairly ▁rapidly , ▁the ▁primary ▁scene ▁concerning ▁the ▁Arm ada ▁being ▁Elizabeth ' s ▁enc amp ment ▁at ▁T il bury , ▁where ▁she ▁gives ▁an ▁inv ig or ating ▁speech . ▁These ▁scenes ▁are ▁inter cut , ▁and ▁immediately ▁followed ▁with ▁her ▁gr ief ▁and ▁heart break ▁over ▁the ▁death ▁of ▁Robert ▁D ud ley , ▁and ▁her ▁brief ▁se clusion ▁during ▁the ▁celebr ations ▁over ▁the ▁Arm ada ' s ▁defeat . ▁The ▁episode ▁ends ▁with ▁her ▁first ▁encounter ▁with ▁Robert ▁De vere ux . ▁The ▁ending ▁makes ▁much ▁of ▁the ▁theory ▁that ▁De vere ux ▁was ▁actually ▁the ▁son ▁of ▁Robert ▁D ud ley ▁by ▁L ett ice ▁Kn olly s , ▁instead ▁of ▁the ▁result ▁of ▁her ▁first ▁marriage ▁to ▁Walter ▁De vere ux . ▁ ▁E pisode ▁ 4 ▁This ▁episode ▁shows ▁Elizabeth ▁in ▁the ▁tw il ight ▁of ▁her ▁reign . ▁Anne ▁Marie ▁D uff ▁and ▁S ien na ▁Gu ill ory ▁are ▁given ▁age ing ▁mak up ▁in ▁this ▁episode , ▁acc ent u ating ▁their ▁age ▁in ▁comparison ▁to ▁the ▁previous ▁episodes , ▁mark ing ▁them ▁as