First published in Isaac Asimov's Science Fiction Magazine, July 1999

A keyboardist was playing a selection of Scarlotti's harpsichord sonatas, brief pieces one to three minutes long, very complex and refined, while the Hadrosaurus herd streamed by the window. There were hundreds of the brutes, kicking up dust and honking that lovely flattened near-musical note they make. It was a spectacular sight.

But the hors d'oeuvres had just arrived: plesiosaur wrapped in kelp, beluga smeared over sliced maiasaur egg, little slivers of roast dodo on toast, a dozen delicacies more. So a stampede of common-as-dirt herbivores just couldn't compete.

Nobody was paying much attention.

Except for the kid. He was glued to the window, staring with an intensity remarkable even for a boy his age. I figured him to be about ten years old.

Snagging a glass of champagne from a passing tray, I went over to stand next to him. "Enjoying yourself, son?"

Without looking up, the kid said, "What do you think spooked them? Was it a -- ?" Then he saw the wranglers in their jeeps and his face fell. "Oh."

"We had to cheat a little to give the diners something to see." I gestured with the wine glass past the herd, toward the distant woods. "But there are plenty of predators lurking out there -- troodons, dromaeosaurs ... even old Satan."

He looked up at me in silent question.

"Satan is our nickname for an injured old bull rex that's been hanging around the station for about a month, raiding our garbage dump."

It was the wrong thing to say. The kid looked devastated. T. rex a scavenger! Say it ain't so.

"A tyrannosaur is an advantageous hunter," I said, "like a lion. When it chances upon something convenient, believe you me, it'll attack. And when a tyrannosaur is hurting, like old Satan is -- well, that's about as savage and dangerous as any animal can be. It'll kill even when it's not hungry."

That satisfied him. "Good," he said. "I'm glad."

In companionable silence, we stared into the woods together, looking for moving shadows. Then the chime sounded for dinner to begin, and I sent the kid back to his table. The last hadrosaurs were gone by then.

He went with transparent reluctance.

The Cretaceous Ball was our big fund-raiser, a hundred thousand dollars a seat, and in addition to the silent auction before the meal and the dancing afterwards, everybody who bought an entire table for six was entitled to their very own paleontologist as a kind of party favor.

I used to be a paleontologist myself, before I was promoted. Now I patrolled the room in tux and cummerbund, making sure everything was running smoothly.

Waiters slipped in and out of existence. You'd see them hurry behind the screen hiding the entrance to the time funnel and then pop out immediately on the other side, carrying heavily-laden trays. Styracosaurus medallions in mastodon mozzarella for those who liked red meat. Archaeopteryx almondine for those who preferred white. Radicchio and fennel for the vegetarians.

All to the accompaniment of music, pleasant chitchat, and the best view in the universe.

Donald Hawkins had been assigned to the kid's table -- the de Cherville Family. According to the seating plan the heavy, phlegmatic man was Gerard, the money-making paterfamilias. The woman beside him was Danielle, once his trophy wife, now aging gracefully. Beside them were two guests -- the Cadigans -- who looked a little overwhelmed by everything and were probably a favored employee and spouse. They didn't say much. A sullen daughter, Melusine, in a little black dress that casually displayed her perfect breasts. She looked bored and restless -- trouble incarnate. And there was the kid, given name Philippe.

I kept a close eye on them because of Hawkins. He was new, and I wasn't expecting him to last long. But he charmed everyone at the table. Young, handsome, polite -- he had it all. I noticed how Melusine slouched back in her chair, studying him through dark eyelashes, saying nothing. Hawkins, responding to something young Philippe had said, flashed a boyish, devil-may-care grin. I could feel the heat of the kid's hero-worship from across the room.

Then my silent beeper went off, and I had to duck out of the late Cretaceous and back into the kitchen, Home Base, year 2082.

There was a Time Safety Officer waiting for me. The main duty of a TSO is to make sure that no time paradoxes occur, so the Unchanging wouldn't take our time privileges away from us. Most people think that time travel was invented recently, and by human beings. That's because our sponsors don't want their presence advertised.

In the kitchen, everyone was in an uproar. One of the waiters was leaning, spraddle-legged and arms wide, against the table, and another was lying on the floor clutching what looked to be a broken arm. The TSO covered them both with a gun.

The good news was that the Old Man wasn't there. If it had been something big and hairy -- a Creationist bomb, or a message from a million years upline -- he would have been.

When I showed up, everybody began talking at once.

"I didn't do nothing, man, this bastard -- "

" -- guilty of a Class Six violation --

" -- broke my fucking arm, man. He threw me to the ground!"

" -- work to do. Get them out of my kitchen!"

It turned out to be a simple case of note-passing. One of the waiters had, in his old age, conspired with another recruited from a later period, to slip a list of hot investments to his younger self. Enough to make them both multibillionaires. We had surveillance devices planted in the kitchen, and a TSO saw the paper change hands. Now the perps were denying everything.

It wouldn't have worked anyway. The authorities keep strict tabs on the historical record. Wealth on the order of what they had planned would have stuck out like a sore thumb.

I fired both waiters, called the police to take them away, routed a call for two replacements several hours into the local past, and had them briefed and on duty without any lapse in service. Then I took the TSO aside and bawled him out good for calling me back real-time, instead of sending a memo back to me three days ago. Once something has happened, though, that's it. I'd been called, so I had to handle it in person.

It was your standard security glitch. No big deal.

But it was wearying. So when I went back down the funnel to Hilltop Station, I set the time for a couple hours after I had left. I arrived just as the tables were being cleared for dessert and coffee.

Somebody handed me a microphone, and I tapped it twice, for attention. I was standing before the window, a spectacular sunset to my back.

"Ladies and gentlemen," I said, "let me again welcome you to the Maastrichtian, the final age of the late Cretaceous. This is the last research station before the Age of Mammals. Don't worry, though -- the meteor that put a final end to the dinosaurs is still several thousand years in the future." I paused for laughter, then continued.

"If you'll look outside, you'll see Jean, our dino wrangler, setting up a scent lure. Jean, wave for our diners."

Jean was fiddling with a short tripod. She waved cheerily, then bent back to work. With her blond ponytail and khaki shorts, she looked to be just your basic science babe. But Jean was slated to become one of the top saurian behaviorists in the world, and knew it too. Despite our best efforts, gossip slips through.

Now Jean backed up toward the station doors, unreeling fuse wire as she went. The windows were all on the second floor. The doors, on the ground floor, were all armored.