Jeannie had outdone herself, as usual, with plates of ham, and carrots done in mustard sauce, and parsnips and potatoes roasted golden, sweet and crisp. But not even Jeannie's cooking could dispel the curious tension that had settled around the lunch table, a tension so palpable that one inhaled it like a cloud of ash with every breath and coughed it out again in awkward, small, throat-clearing sounds that served as substitutes for conversation. Clearly, the change in atmosphere had something to do with Brian McMorran's coming home, although no one so much as mentioned his name. And the man himself was nowhere to be seen. I guessed he would be eating in the kitchen with his wife, and when I next looked out the dining room window I knew I'd guessed correctly. Wally Tyler normally lingered long over the kitchen teapot at lunchtime, but today his cap was pacing grumpily back and forth on the far side of the garden wall, spouting sharp rapid puffs of cigarette smoke that twisted in the rain-dampened air.

The rain shower had been a brief one—a "plump," as David called it—and already the sun was beginning to scatter the clouds. The group of us scattered as well, while our teacups were still warm. Peter walked into town to collect the post; David and Wally went back to the ditch, and Adrian, having lured Fabia into assisting with his survey, strolled whistling down to the southwest comer, radar unit in tow.

I suppose I could have lent a hand to any one of them, but since I wasn't really needed anywhere at the moment I chose instead to spend an hour throwing sticks for Kip, behind the Principia.

Here, at least, I could feel truly useful. And Kip was a brilliant fetcher of sticks. Not like my parents' dog, who clamped his teeth around whatever you threw to him and staunchly refused to bring it back. Kip not only brought the stick back, he actually dropped it at my feet and waited with a wide grin until I threw it again, then he wheeled like a dancer and bounded off happily to hunt the stick down in the tangle of swaying weeds and wild flowers.

He was bringing it back for what seemed the thousandth time when he suddenly stopped, planted his feet, and sniffed the warming air. After a second sniff he gently laid the stick down on the grass and looked expectantly toward the drive, his plumed tail waving as he gave a soft, impatient whine. I'd seen him go through this routine a dozen times since I'd been at Rosehill—he did it whenever a car he knew came up the drive, or when one of us came back from an outing. Only this time the drive was empty, and it was much too early for Robbie to be home from school.

He whined again, and I shook my head. "You're out of luck, love," I informed him. "False alarm."

The collie only wagged his tail harder, insistently, and raised his head to give a happy little woof of welcome. Picking up his stick again, he bounced past me and began to trot away along the ridge, performing an odd little dance that seemed to demand he turn full circle every several steps, followed by a joyful leap with stick in mouth until his head reached a specified level in the empty air. The same level every time, I noticed, hugging myself to ward off the crawling chill of recognition ...

The same level at which a grown man's hand might hang, as he walked beside the dancing dog.

I'd seen him do the same thing when he walked at Wally's side, or David's, or my own. Kip loved to have his head patted. Of course, this time, there was nobody walking beside him. Nobody, I told myself firmly. Certainly not a ghost.

But when the collie turned and started back again, still bouncing and wagging, I didn't feel nearly so brave. I turned, too, half in panic, and bolted around the corner of the Principia, to get clear of the Sentinel's path.

"Darling, when I said I'd gone head over heels for you, I didn't mean it quite this literally." Adrian winced as he picked himself up and brushed grass off his leg. "Aren't you supposed to yell 'fore' or 'heads up' or something, before you come barrelling blind around a comer?"

"Sorry." I dusted the dirt from his sleeve, solicitously. "Are you all right?”

“I'll have my lawyers get in touch."

"Idiot. Have you finished with your survey?"

"Mmm." His eyes narrowed thoughtfully as he flexed his right arm, testing the action of his elbow. "If you promise not to make any sudden movements, I might even let you help me plot the readings on my computer. Or are you busy?"

"No, I'm not busy." I was glad to have a reason to go indoors, out of sight of whatever was walking the ridge. Relieved, I followed Adrian in through the gaping front doors of the Principia. The air was cooler here, and calmer, with a pleasantly sawdusty smell that defied the efforts of the quietly humming filters fixed to the beams overhead.

I wheeled my padded chair into Adrian's cubicle and watched him without really paying attention, content to let the drone of his computer soothe my superstitious fears, like a giant cross held up against a vampire. In the midst of all this gleaming bright technology, it was difficult to think of things like ghosts.

"I never did ask you," said Adrian, in a mildly curious tone, "what did Howard have to say this morning, about your sherds?"

"Howard?" I glanced up blankly, before remembering my telephone call from the British Museum. It seemed an age ago. "Oh, nothing helpful, I'm afraid. He says they're Agricolan."

"Well, that's what you thought yourself, wasn't it?"

"Yes." I ran an absent finger along the seam of my faded jeans. "Which only means the pot was made in that time period, really. It doesn't tell us when the thing was used."