[Its goal with Felix or with everyone else? It's a question with a fine point, the Doctor finds. His voice is quiet when he speaks, thinking back to what the Mara wanted and what it was doing.]

To rule. Enslave everyone. Create and then feed off of so much chaos and suffering at its hand, my hands, to be exact. I could never allow that to happen again.

What it wanted of you... The Mara thought it had you. I-- I did too, thought that you'd taken its side right up until entering your meeting rooms.

I'm concerned. A little confused. How much was an act?