A Certain Magical Index II Episode 13: Croce di Pietro (Apostolic Cross)
Episode 13 of 24 of A Certain Magical Index II, aired January 6, 2011, 25 minutes. Available with English subtitles and dub where released.
Episode summary
As Toma and the others come close to beating Oriana, the motivations behind her actions are finally revealed. But taking out Oriana might not be enough to stop her plot from reaching a catastrophic completion!