Mack tried the door. It was latched with a big iron key of simple design. Mack had its counterpart in his pocket, and he took it out now and fitted it to the lock-hole. The key at first would not budge, and Mack wiggled it back and forth, then withdrew it and greased the key from a small container of badger's fat, a sovereign remedy for sticking locks. The key turned, and he pushed the door open.

It was twilight in the doctor's room, for the bright sunlight had no direct means of ingress, but rather filtered in after due reflection on the shadowy wall. Virgil's pale bust seemed to watch him as he stepped noiselessly through the room, the floorboards forbearing to creak, so light was his passage. The room still held fumes of mercury and sulphur and burnt candles and mouse droppings. The glass bottles and retorts of the doctor's alchemical equipment stood on a nearby table, stray glints of light reflected from their glassy surfaces. There in one corner was the doctor's sleeping cot, two planks laid across two low trestles, yet with an ermine mantle thrown over it that revealed the doctor's luxurious tastes.

Mack paid no attention to these. They were but the stage settings for his deed, which was to find that which was small, valuable, and—since he was in his own way a connoisseur—beautiful as well. For example, that single emerald lying carelessly by itself on the big deal table that was the doctor's work space, next to the crystal ball with the skull lying next to it. The emerald would do very nicely for openers. Mack made his way toward it. His hand, with its long fingers not too clean around the knuckles, was about to close on the object, when suddenly there was a very loud sound from within the room.

Mack was frozen in midflinch, for that sound, coming as a crash of thunder in the high mountains when the autumn storms come rushing down from the north, seemed to presage a reversal of the natural order of things, for how else explain why Nature's loud hurrah had come from within the room rather than outside where it belonged? And how explain the sudden coruscation of fire that appeared spontaneously in the middle of that dark-walled room, leaping up from the floorboards in great licking tongues of red and orange flame?

Still frozen, his mouth agape with wonder, Mack saw a figure form up, mistily at first and then with sharp definition, in the middle of the flames. It had the appearance of a man, a longheaded man with sleek black hair with a natural part in the middle, with a thin moustache and that short, pointed beard known as an imperial. He was dressed in dark clothing of somber magnificence, and bore with him a roll of parchment tied with a red ribbon.

"Greetings, Dr. Faust," said the figure, stepping out of the flames that then extinguished themselves. "I am Mephistopheles, a prince in the forces of Darkness, thrice holder of the Bad Deed of the Year award from Standard Demonics, one of our great multitemporal corporations."

Mack came unfrozen sufficiently to say, in a clumsy stutter unlike his usual glibness, "Oh. Hello. Pleased to make your acquaintance."

"You are surprised, perhaps, by my somewhat unorthodox entrance?"

"Oh, no, not at all," Mack said, for whatever else he would think when his brain unfroze sufficiently to permit cerebration, he knew it would not be well to offend this being. "I mean, whatever seems suitable."

"I made the Little Grand Entrance—there not being room here for the Grand Grand Entrance, involving as it does timed explosions of rockets and barrels of gunpowder—to offer, in a moment and in a compact metaphor, my bona fides. I am indeed Mephistopheles, a prince of demons, and I do indeed come from The Other Side with an offer I think you'll be unable to turn down."

Mack had by now recovered his sangfroid, for he had grown accustomed, in his way of life, to sudden changes of fortune. True, he had never encountered a devil before, but this sort of thing was only to be expected in that day and age when miracles took place daily from one end of Europe to another, and the effects of witchcraft were a matter for continual comment.

Mack was aware, of course, that this great demon Mephistopheles had made a mistake, thinking he was the learned doctor Faust. So even demons could be in the wrong! But he wasn't about to correct him.

For one thing, it probably wouldn't be safe, not after Mephistopheles had gone to all the trouble of staging a Little Grand Entrance; and for another, it sounded as if some profit might be gleaned from this fortuitous encounter.

"I'd very much like to hear your offer," Mack said. "Do take a seat—that trestle chair should serve you well enough if you don't burn through it—and tell me what you had in mind."

"I thank you for your courtesy," said Mephistopheles, sweeping back his coattails as he sat, and causing the tallow candle in its charred oaken container to burst spontaneously into flame. Several more candles followed suit. At last getting the lighting as he wanted it, so that it cast long, sinister shadows across his face, Mephistopheles said, "How would you like, for openers, wealth of an extent and a greatness undreamed of since the days when Fabius Cunctator sacked Carthage? This wealth would be in the form of many well-made caskets full of gold coins of a purity undreamed of in earthly coinages. And it would be accompanied by barrels of the most precious stones, pearls the size of hens' eggs, diamonds as large as pomegranates, and an emerald large enough to form a dining table for six persons. And there would also be a perfect set often matched rubies of deepest fire, each the size of a horse's turd. And there would be much more besides, the detailing of which would tax even supernatural vocal cords and which may well be left to the imagination."

"I get the idea," Mack said. That sounds very good indeed. It would be churlish of me to ask you to specify the exact number of barrels of gems and caskets of gold. Even if it were only one of each it would be a most excellent present."

"These are not presents," Mephistopheles said. "They may be considered payment for a service I shall require of you, and for one thing more."

"It's that one thing more I'm afraid of," Mack said. "No offense meant, of course."

"None taken. It is a pleasure to be able to speak frankly. But there is no trick here, Faust. Do you think the Dark Powers would go to all the trouble of hiring my services and staging a Little Grand Entrance all for the purpose of duping you? Your credulity might be tested at far less expense!"

"Hey, don't get me wrong, the wealth thing sounds very good. But was there anything else? Like, who am I supposed to enjoy this wealth with?"

"As for that," said Mephistopheles, his eyes sparkling as the thought of concupiscence entered his mind,

"we will also provide you with a bevy, or even two bevies, of such beauteous maidens as the world has seen only in its fevered dreams of hopeless longing. These young ladies, Faust, each of them fit for a potentate, come in a variety of delectable shapes and colors, with hairstyles to suit every mood. In addition to their pulchritude, they also excel in the arts of love, possessing deliciously soothing skills as well as intoxicatingly exciting ones. Some of these ladies can give you intellectual companionship, Faust, while others will suit your brutish or childish moods, while still others will just be around to bring you your morning borscht. They also have the advantage of loving, next to you, nothing so well as lying in a cool chamber in a cataleptic sleep until their services are required again. And not only are they a practically inexhaustible gift of sensuality in themselves, they all have best friends, sisters, and mothers, who can provide piquancy by standing by to be seduced."

"Why, where you please," Mephistopheles said. "But if none of the present divisions of the world please you, we can take you elsewhere in time, to any moment in any place anywhere, even the ones that do not yet exist, because there is a law that says that that which is conceived must exist from the moment of its conception. And we can set you up in such a place as a great doctor of learning, or a prince of your own state, or a wealthy churchman, or what you please. We like to think of ourselves as occupational therapists, too, so you may do what you will in this new place, and if the job does not exist, we create it for you. We can find you a purpose in life that will suit you down to a T, no matter what kind of a T you are. And, with potions and simples that we supply free with our offer, we ensure you a long, happy life and a decline so gradual that you don't even notice it."