User blog comment:EmrysOfAlbion/Series 5 Poster - Kilgharrah imprisoned Morgana?/@comment-5822565-20120908162106/@comment-4892425-20120908192050

I'm not sure of the how (maybe human help) but I can guess at the why. Kilgharrah wants the rise of Arthur and the destruction of Morgana. Since he can speak to anyone he would explain why she's been in chains for so long: her crimes against the Crown and the people of Camelot, namely killing Uther and letting an innocent sorceror (Dragoon/Merlin) take the fall; using an enchantment and necromancy to frame Gwen for betraying Arthur;  and enlisting Agravaine's cooperation in all her schemes. Morgana would assume Agravaine ratted her out in exchange for his life (Agravaine never could stomach some of Morgana's viciousness); Arthur killed him anyway after he got a full confession; Kilgharrah hunted her down on Emyrs' command; and on Arthur's orders she was imprisoned for the rest of her life because he couldn't execute his half-sister. (Morgana could also assume Arthur ordered Emrys to get Agravaine to spill it by using magic, the same way she enlisted Althor to get Gaius to reveal Emyrs' true identity.) She would also think her torture was under Arthur's orders to make her suffer. Truth be told if Arthur had captured her he would have executed Morgana for treason with a quickness, but she's so twisted she wouldn't be able to rationally come to that conclusion. How she's busted out and by whom is going to be very interesting.