英語版FF9日誌84 : I must run a background check on them.

前回と同じセリフです。

Steiner:

At last! Queen Brahne is sure to be pleased.

However... the princess would have been left behind without the thief's aid.

I shall petition for a life sentence on his behalf. Yes, that would be the honorable thing! But that was because the crew wouldn't listen! I must run a background check on them. Ah, yes. It is my duty as a knight!

I must run a background check on them.

run a background check （on ~）で、「（～の）身辺調査を行う」という意味です。