Episode 29

The Key (鍵) is the ninth episode of the second season, and the twenty-ninth episode of The Eminence in Shadow anime adaptation.

Synopsis
遺跡に隠された“鍵”を巡る、王妃をも巻き込んだ戦闘が始まる.
 * -|English= On the way to the Kingdom of Oriana, Cid is also on a journey of self-discovery and reflection. He feels like something's missing. Is he imagining it?
 * -|Japanese= 559の下でオリアナ王国の遺跡調査にあたる666たちは、教団幹部に連行される666の母レイナ王妃を発見.