Deep Breath - S8-E1
Trivia: In the scene at the end where Clara gets a phone call from the Eleventh Doctor, the shots with Matt Smith were filmed during the production of "The Time of the Doctor", almost a year before "Deep Breath" was made.
Deep Breath - S8-E1
Trivia: The Clockwork Droids that serve as the episode's villains came from the SS Marie Antoinette, a sister ship to the SS Madame de Pompadour from "The Girl in the Fireplace". It's not surprising that the Doctor finds the situation familiar. The fact that he doesn't recognize the name of the ship is also unsurprising - he never found out what the Madame de Pompadour was actually called in the previous episode.
Deep Breath - S8-E1
Trivia: The face that the Doctor wears when he disguises himself as a clockwork droid was cast from the statue of the Eleventh Doctor at the Doctor Who Experience. This is especially noticeable when he's pulling the face off.
Chosen answer: The Master knows that deep down, he deserves death for the crimes that he's committed throughout his life, and since he regards The Doctor as his arch-foe, he expects it to be at his hands. The fact that The Doctor is still willing to forgive him after everything the Master's put him through hurts him more deeply than death would.
Captain Defenestrator