The Haarlock Auction was held at the House of Dust and Ash on Solomon. It was be centered around the belongings of late Rogue Trader Erasmus Haarlock and other artifacts from the Haarlock line.
No one knew who originally initiated the auction or who reaped it's rewards, as the Sorrowful Guild appeared to be the only public face there was to the proceedings.
The auction was interrupted by a trap controlled by the last item on the
auction catalogue, a device known as The Gilded Widow, which gave an ultimatum of 13 hours to present her with the blood of a servant of Haarlock that deemed the attendees worthy of redemption.