Enter the bazaar of the bizarre where fate and fortunes are for sale in this high-stakes magical adventure across a London not quite like our own, perfect for fans of Neverwhere and The Night Circus. Below Covent Garden lies the Under Market, where anything and everything has a price: a lover's first blush, a month of honesty, five minutes of strength, a wisp of luck and fortune. As a child, Deri was sold to one of the most powerful merchants of the Under Market as a human apprentice. Now, after seventeen years of servitude and stealing his master's secrets, Deri spots a chance to buy not only his freedom but his place amongst the Under Market's elite.

A runaway princess escapes to the market, looking to sell her destiny. Deri knows an opportunity when he sees it and makes the bargain of the century. If Deri can sell it on, he'll be made for life, but if he's caught with the goods, it will cost him his freedom forever. Now that Deri has met a charming and distractingly handsome young man, and persuaded him that three dates are a suitable price for his advice and guidance, Deri realises he has more to lose than ever.

News of the princess spreads quickly and with the royal enforcers closing in, Deri finds himself the centre of his master's unwanted attention. He'll have to pull out all the stops to outmanoeuvre the Master Merchant, save the man he loves, make a name for himself, and possibly change the destiny of London forever.