"Thank you," Katherine smiles in return, pushing in desk chairs and tidying discarded papers and personal effects. "I am rather fond of them. They keep me on my toes."

When he says 'inquisitive bunch', a blush returns to her cheeks. She places one delicate hand over her face.

"Oh, heavens, Doc, I'm sorry about that. I don't know what got into them, really," she chuckles nervously.