[ While the Doctor knows of the expedition, and the horrific turn those events had taken, he doesn't know the specific details of every member of the crew — their fate, yes, but not the lives they led. So, it makes him all the more curious about Thomas Jopson and his life before this...everything that happened.

It also makes the Doctor rather more committed than ever to seeing the people here safe. For now, at least, he'll forego thinking about the fate awaiting Jopson at the end of this. ]

Well, you are in the best company, Jopson, that's absolutely true. And the very best happens to be a bowtied man leading you towards a lake just now. [ Another cheeky grin because the Doctor tends to think quite highly of himself in that regard. He softens, though, to add — ] Strange to think a place like this could be a respite of sorts.