Tropes:
- Accent Slip-Up: Jack's attempt to imitate the Doctor.
- Big Damn Heroes: The Doctor!
- Big "NO!": Lampshaded by the Doctor.
- Brief Accent Imitation: The Doctor imitating Jack.
- Foreshadowing: Jack reveals to the Doctor that he knows his wife, foreshadowing his encounters with River Song in R&J.
- "I Know You're in There Somewhere" Fight: The Doctor and Jack to Callista.
- Mood Whiplash: Goes from silly to horrifying midway through as things start going wrong.
- Nice Job Breaking It, Hero: Jack's plan to allow the Sofia to host the Janovar souls.
- Poor Communication Kills: Albeit justified; the Doctor is too weak to explain the situation to Jack at first, and Jack is so quick to assume he knows what he's dealing with that he doesn't realise the truth until it's almost too late.
