“Yes,” I answer. “If for no other reason than to prevent questions about the procedures I used, about the veracity of my testimony. I like jurors to see where I found evidence. It’s helpful if they can witness for themselves that it was properly handled and preserved, and in dive search and recoveries it’s especially important because there’s no talking, no narrative, no explanation. You can’t hear much underwater except bubbles.”

“So when you saw who you believe was Carrie Grethen, the camera on your mask was recording the entire time,” Donoghue says to me. “And that’s because you had turned it on.”

“That’s correct.”

“Then Carrie should be on film.”

I start to answer that of course she will be but the look in Lucy’s eyes stops me. Something is wrong.

“Wherever my face was directed, the camera was recording it,” I explain to Donoghue as uncertainty stirs inside me. “And there are no assumptions involved. It’s not what I believe. It’s about what’s true. I know who I saw.”

“I have no doubt you believe you do.”

“It’s not merely what I believe.”

“But it is exactly that,” Donoghue says. “It’s what you believe, Kay, which isn’t necessarily what’s true. It happened fast. Out of nowhere. The blink of an eye. You had Carrie Grethen on the brain and then someone confronted you in not exactly optimal conditions. You’d just had the shock of discovering the two divers had been murdered by someone …”

“By her.”

“I know that’s what you believe. I’m sure you’re sincere. The visibility had to be pretty bad. Do you wear contact lens when you dive? Is your mask prescription?”

“I know who I saw.”

“Let’s hope we can prove it,” she says, and Lucy has the same look in her eyes.

Something is wrong.

“This is what you really think?” I’m getting angry. “You think I was in shock, couldn’t see, was confused, and misidentified whoever was down there with a spear gun?”

“We have to prove it,” Donoghue repeats. “I’m giving you a dose of what the opposition will say.”

“And the opposition is the FBI,” I reply. “What a sad thing to contemplate and it seems I contemplate it all too often these days. When I was getting started I was told that law enforcement was a public service. We’re supposed to help people not host inquisitions and persecute.”

“We absolutely view the FBI as the opposition,” Donoghue confirms. “And I’m warming you up to what they’ll say, what they’re already saying I’m willing to bet. We have to prove it absolutely was Carrie Grethen, that she absolutely isn’t dead, that she absolutely is the one shooting people, including you. We have to demonstrate that she absolutely is … What are they calling the sniper?”

“Copperhead.”

“Yes. That she’s Copperhead.”