"If it's so potentially powerful, why are you so ready to give it up?" I asked.

Wilde struck her best Why am I beset by fools of no vision pose. "John. Darling. I am not stupid enough to try and keep anything this earth-shattering for myself. I'd have to spend all my time fighting off major players who wanted to take it away from me. And you can bet the Faerie wouldn't deign to get involved, the ungrateful little shits. No, an auction, on famously neutral ground, is the best way to make a substantial profit on this little beauty." She blew a kiss at the butterfly in its case. "And then I shall take all the money and run, all the way back to the Unseeli Court, and not show my head again until the last of the shooting's died down."

"Given the clear potential for things to get really nasty really quickly, I'm surprised the Authorities haven't stepped in to confiscate the butterfly," I said, frowning. "Walker doesn't normally approve of anything that threatens to upset his precious status quo."

"Walker might like to think he's in charge of things round here," Wilde said dismissively, "but the Authorities have always understood that free enterprise has to come first."

"Philistines," said Grave, polishing her monocle furiously.

"Or," I said, "perhaps the Authorities don't believe this butterfly is the real thing, either."

Wilde smiled widely and blew a perfect smoke ring. "Don't care was made to care, darling."

By now the bidders had started filing in and were already squabbling over who had rights to seats in the front row. I politely excused myself to Wilde and Grave, and took a stroll round the perimeter of the Hall while I watched the crowd assemble noisily. Most were just anonymous faces, there to represent people or interests who didn't care to be publicly identified, or just the usual hopeful souls in search of a bargain.