"Your what, Sire?... I don't catch."

"I say you must have got my letter, since you are here, and now please get me out of this hole as quickly as possible ... it's awful being shut up here ... you can't imagine how I long for a breath of fresh air."

"Yes, yes, I understand, but I'm wondering how I'm to get you out."

"What's that?"

"Have you thought over a way we can effect the exchange?"

"But, my dear fellow, you must know what to do. I gave you full particulars in my letter."

"In your letter?"

"Yes.... I even enclosed a diagram."

There was a pause, the voice then asked:

"Will you pass me up this letter by ..."