Luke, Sarah Jane and others in “Unfinished Business”

Luke

I had to leave K-9 back at uni, but look ... [pulls out a long, metal whistle] I made this. Dog whistle. 'Cause you never know.

Sarah Jane

What's he doing up there?

Luke

He's backing up the Bodleian Library. The whole lot. He wouldn't come back with me.

Mr Smith

Oh, good...ness me, what a terrible shame.

Rani

Oy, Mr Smith, don't be nasty! We could always swap you for another computer...like the SerfBoard.

Mr Smith

I hardly think that would be a good exchange.