Finally, some exposition! Finally, we get to learn a little bit about what has been happening. And, finally, some of my suspicions have been confirmed. See, it really isn’t all that hard to explain to the audience what is happening, INTRUDERS; all your mystery is not gone. In fact, we have new ones.
As the show was hinting, Richard Shepherd has been working off the books on the Marcus/Madison case – we just had no idea how far off the books he’s been working! Marcus asked him to shepherd him and bring him back when the time is right – so “shepherding” appears to be a different step than merely bringing someone back.
Funny thing about myths and legends: They have a way of taking on lives of their own. Look at the Doctor. He started out as a crotchety old man on a children’s show, and now look at him: a worldwide phenomenon beloved around the globe.
And Robin didn’t start out as a hero. He was a thief who grew into a folk hero, just like the Doctor. The Doctor will be the first to admit he’s not hero – he’s just the guy willing to step forward and make decisions when no one else will (See: “Voyage of the Damned). The 12th Doctor is still unsure if he’s even a good man, let alone a hero, so he resents meeting a man Clara regards as a hero – even if he never really existed. See the problem?