“Tell me, which of Irina's sisters are you?...” – Jack

Jack

Tell me, which of Irina's sisters are you? Elena or Yekatarina?

I haven't been Yekatarina since I was a child. My sisters call me Katya. Which means Irina wasn't the one who told you about me.

Jack

Learning that your wife is actually a Russian spy drives you to learn all you can about her true identity.

As observant as you are, you were married to my sister for five years without suspecting who she really was: her love must have been intoxicating.