“Sure, but if you can't tell them who and why, what does that leave? “Dear Sir or Madam, this is to inform you you might be bludgeoned, stabbed, or run over by an unidentified, revenge-crazed psycho?”

“Maybe one of them can tell me the who and why. And I know I'd have liked to have been warned. The problem is finding them. None of them are working or living where they were at the time of the conference. And the woman I thought might be Rosenblatt's wife hasn't returned any of my calls.”

Another stretch of silence.

“You're wondering,” he said, “if they've been visited, too.”

“It did cross my mind. Katarina's not been listed in the APA directory for five years. She could have just stopped paying dues, but it doesn't seem like her to just drop out of psychology and close up the school. She was ambitious, very much taken with carrying on her father's work.”

“Well,” he said, “it should be easy enough to check tax rolls and Social Security records on all of them, find out who's breathing and who ain't.”

He reached Hilgard and turned left, passing the campus of the university where I'd jumped through academic hoops for so many years.

“So many people gone,” I said. “Now the Wallace girls. It's as if everyone's folding up their tents and escaping.”

“Hey,” he said, “maybe they know something we don't.”

The strip-mall at Olympic and Westwood was dark except for the flagrant white glare from the minimart. The store was quiet, with a turbaned Pakistani drinking Gatorade behind the counter.

We stocked up on overpriced bread, canned soup, lunch meat, cereal, and milk. The Pakistani eyed us unpleasantly as he tallied up the total. He wore a company shirt printed repetitively with the name of the mart's parent company in lawn green. The nametag pinned to his breast pocket was blank.

Milo reached for his wallet. I got mine out first and handed the clerk cash. He continued to look unhappy.

“Whatsamatter?” said Milo. “Too much cholesterol in our diet?”

The clerk pursed his lips and glanced up at the video camera above the door. The machine's cyclops eye was sweeping the store slowly. The screen below filled with milky gray images.

We followed his gaze to the dairy case. An unkempt man stood in front of it, not moving, staring at cartons of Half-and-Half. I hadn't noticed him while shopping and wondered where he'd come from.

Milo eyed him for a long moment, then turned back to the clerk.

“Yeah, police work's strenuous,” he said in a loud voice. “Got to shovel in those calories in order to catch the bad guys.”

He laughed even louder. It sounded almost mad.

The man at the dairy case twitched and half turned. He glared at us for a second, then returned to studying the cream.