In part two of this episode, the zygons are trying to take over the world and look for the Osgood box. While the Physician and Osgood are on the plane, the Zygon version of Clara is shooting rockets. But the honest Clara, who's in a pod underground, can still communicate with the Zygon.
The Doctor and Osgood escaped the plane before the blast. The Doctor thinks Clara is dead, but when he gets a text from her, Osgood believes that she may be alive.
The zygon, or Bonnie as she calls herself, tries to find the Osgood box so she can cause chaos. She realizes Clara can still control the body and goes to her pod for information. Clara challenges Bonnie, but Bonnie makes threatens her life.
Bonnie takes Clara to the Tower, while the Doctor and Osgood get attacked by zygons but saved by Kate, who pretends to be one of them. Kate is upset and wants to destroy the Zygons, but the Doctor doesn't, and when they get there, he makes a perfect case.
There in the tower are two boxes. Heck, you know there isn't just one, and both Kate and Bonnie try to make the decision. But the Doctor makes a case for not to do it and that he's seen what it's like and almost destroyed his people, but Clara helps him see it.
The two stopped and ended the battle. Yes, I'm still calling it a battle. Bonnie lets it go and gives every one of their kind a chance at freedom, while Kate forgets this had ever happened.
Meanwhile, we still couldn't get an answer from Osgood if she was a human or a zygon, and then came another one. Here's my point: who cares if she's a Zygon? Osgood is here and isn't leaving. Having two of them should be twice the fun and twice the more Doctor wardrobe.
I was amazed at this episode. Give a lot of credit to Peter; he gave an outstanding performance when talking to Kate and Bonnie. I was moved and amazed.
Overall, I give this episode an 8/10.
You can catch Doctor Who on Saturday nights at 9/8c on BBC America.