Mary points a stubby finger behind him, back towards the main bar.

"That is Milliways," she tells him. "It is a bar - and these are the grounds. There are doors to it in odd places - there is one that leads where I come from in the - not very far from here."

A pause; then, chin jutting out: "But you may not go there - that is my world. Strangers are not to go there. If you wish to leave you ought to go back to your place."