Then the beetle crossed the edge of the board.

"Time, Roden," the lean one said instantly.

The pudgy one moved his bishop and immediately turned the beetle around and started it trudging back the other way.

"If the beetle just cuts across the corner, is time up then?" Starling asked.

"Of course time's up then," the pudgy one said loudly, without looking up. "Of course it's up then. How do you play? Do you make him cross the whole board? Who do you play against, a sloth?"

"I have the specimen Special Agent Crawford called about."

"I can't imagine why we didn't hear your siren," the pudgy one said. "We're waiting all night here to identify a bug for the FBI. Bugs're all we do. Nobody said anything about Special Agent Crawford's specimen. He should show his specimen privately to his family doctor. Time, Pitch!"

"I'd love to catch your whole routine another time," Starling said, "'but this is urgent, so let's do it now. Time, Pitch."

The black-haired one looked around at her, saw her leaning against the doorframe with her briefcase. He put the beetle on some rotten wood in a box and covered it with a lettuce leaf.

When he got up, he was tall.

"I'm Noble Pilcher," he said. "That's Albert Roden. You need an insect identified? We're happy to help you." Pilcher had a long friendly face, but his black eyes were a little witchy and too close together, and one of them had a slight cast that made it catch the light independently. He did not offer to shake hands. "You are…?"

"Clarice Starling."

"Let's see what you've got."

Pilcher held the small jar to the light.

Roden came to look. "Where did you find it? Did you kill it with your gun? Did you see its mommy?"

It occurred to Starling how much Roden would benefit from an elbow smash in the hinge of his Jaw.

"Shhh, " Pilcher said. "Tell us where you found it. Was it attached to anything-- a twig or a leaf-- or was it in the soil?"

"I see," Starling said. "Nobody's talked to you."

"The Chairman asked us to stay late and identify a bug for the FBI," Pilcher said.

"Told us," Roden said. "Told us to stay late."

"We do it all the time for Customs and the Department of Agriculture," Pilcher said.

"But not in the middle of the night," Roden said.

"I need to tell you a couple of things involving a criminal case," Starling said. "I'm allowed to do that if you'll keep it in confidence until the case is resolved. It's important. It means some lives, and I'm not just saying that. Dr. Roden, can you tell me seriously that you'll respect a confidence?"

"I'm not a doctor. Do I have to sign anything?"

"Not if your word's any good. You'll have to sign for the specimen if you need to keep it, that's all."

"Of course I'll help you. I'm not uncaring."

"Dr. Pilcher?"

"That's true," Pilcher said. "He's not uncaring."

"Confidence?"

"I won't tell."

"Pilch isn't a doctor yet either," Roden said. "We're on an equal educational footing. But notice how he allowed you to call him that." Roden placed the tip of his forefinger against his chin, as though pointing to his judicious expression. "Give us all the details. What might seem irrelevant to you could be vital information to an expert."

"This insect was found lodged behind the soft palate of a murder victim. I don't know how it got there. Her body was in the Elk River in West Virginia, and she hadn't been dead more than a few days."

"It's Buffalo Bill, I heard it on the radio," Roden said.

"You didn't hear about the insect on the radio, did you?" Starling said.

"No, but they said Elk River-- are you coming in from that today, is that why you're so late?"

"Yes," Starling said.

"You must be tired, do you want some coffee?" Roden said.

"No, thank you."

"Water?"

"No."

"A Coke?"

"I don't believe so. We want to know where this woman was held captive and where she was killed. We're hoping this bug has some specialized habitat, or it's limited in range, you know, or it only sleeps on some kind of tree-- we want to know where this insect is from. I'm asking for your confidence because-- if the perpetrator put the insect there deliberately--then only he would know that fact and we could use it to eliminate false confessions and save time. He's killed six at least. Time's eating us up."

"Do you think he's holding another woman right this minute, while we're looking at his bug?" Roden asked in her face. His eyes were wide and his mouth open. She could see into his mouth, and she flashed for a second on something else.

"I don't know." A little shrill, that. "I don't know," she said again, to take the edge off it. "He'll do it again as soon as he can."

"So we'll do this as soon as we can," Pilcher said. "Don't worry, we're good at this. You couldn't be in better hands." He removed the brown object from the jar with a slender forceps and placed it on a sheet of white paper beneath the light. He swung a magnifying glass on a flexible arm over it.

The insect was long and it looked like a mummy. It was sheathed in a semitransparent cover that followed its general outlines like a sarcophagus. The appendages were bound so tightly against the body, they might have been carved in low relief. The little face looked wise.

"In the first place, it's not anything that would normally infest a body outdoors, and it wouldn't be in the water except by accident," Pilcher said. "I don't know how familiar you are with insects or how much you want to hear."

"Let's say I don't know diddly. I want you to tell me the whole thing."

"Okay, this is a pupa, an immature insect, in a chrysalis-- that's the cocoon that holds it while it transforms itself from a larva into an adult," Pilcher said.

"Obtect pupa, Pilch?" Roden wrinkled his nose to hold his glasses up.

"Yeah, I think so. You want to pull down Chu on the immature insects? Okay, this is the pupal stage of a large insect. Most of the more advanced insects have a pupal stage. A lot of them spend the winter this way."

"Book or look, Pilch?" Roden said.

"I'll look." Pilcher moved the specimen to the stage of a microscope and hunched over it with a dental probe in his hand. "Here we go: No distinct respiratory organs on the dorsocephalic region, spiracles on the mesothorax and some abdominals, let's start with that."

"Ummhumm," Roden said, turning pages in a small manual. "Functional mandibles?"

"Nope."

"Paired galeae of maxillae on the ventro meson?"

"Yep, yep."

"Where are the antennae?"

"Adjacent to the mesal margin of the wings. Two pairs of wings, the inside pair are completely covered up. Only the bottom three abdominal segments are free. Little pointy cremaster-- I'd say Lepidoptera."

"That's what it says here," Roden said.

"It's the family that includes the butterflies and moths. Covers a lot of territory," Pilcher said.

"It's gonna be tough if the wings are soaked. I'll pull the references," Roden said. "I guess there's no way I can keep you from talking about me while I'm gone."

"I guess not," Pilcher said. "Roden's all right," he told Starling as soon as Roden left the room.

"I'm sure he is."

"Are you now." Pilcher seemed amused. "We were undergraduates together, working and glomming any kind of fellowship we could. He got one where he had to sit down in a coal mine waiting for proton decay. He just stayed in the dark too long. He's all right. Just don't mention proton decay."

"I'll try to talk around it."

Pilcher turned away from the bright light. "It's a big family, Lepidoptera. Maybe thirty thousand butterflies and a hundred thirty thousand moths. I'd like to take it out of the chrysalis-- I'll have to if we're going to narrow it down."