"So you are saying the toxicology screen was negative."

"I am," Allan said. "It was definitely negative."

"My God, it's like pulling teeth," Latasha complained. She rolled her eyes and flapped her arms impetuously.

"What drugs constitute your screen?" Jack asked. "Is digitalis included?"

"Digitalis is included," Allan said as he half-stood to hand Jack the lab's toxicology screen drug list.

Jack scanned the sheet. He was impressed with the number of drugs included. "What methods do you use?"

"We use a combination of chromatography and enzyme immunoassay for our screens."

"Do you have gas chromatography-mass spectrometry?" Jack asked.

"Bet your ass we got mass-spec," Allan said proudly. "But if you want me to use the artillery, you're going to have to give me an idea of what I'm looking for."

"We can give you only a general idea at the moment," Jack said. "According to the symptoms the patient was reported to have had if drugs or poisons were involved, we would be looking for something capable of producing a markedly slow heart rate unresponsive to all attempts at pacing and a respiratory depressant, since she was also described as being cyanotic."

"You're still talking about a shitload of potential drugs and poisons," Allan said. "Without more specifics, you're asking me for a miracle!"

"I know," Jack admitted. "But Latasha and I are going to go back and brainstorm to see if we can come up with some likely candidates."

"You'd better," Allan said. "Otherwise, this is probably going to be a fruitless exercise. First, I have to figure out what to ignore with all the embalming fluid on board."

"I know," Jack repeated.

"Why are you even considering homicide?" Allan asked. "If you don't mind my asking."

Jack and Latasha exchanged a glance, unsure of how much to say.

"We just did the post a few hours ago!" Latasha said. "We didn't find diddly-squat. There was no cardiac pathology, which doesn't make sense, considering the history."

"Interesting," Allan said pensively. He locked eyes with Latasha. "Let me get this straight. You want me to do all this work, take up my whole night, and do it on the sly to boot. Is that what you are saying?"

"Of course we want you to do it!" Latasha snapped. "What's the matter with you? Why else would we be sitting here?"

"I don't mean you and the doc here," Allan said, gesturing toward Jack. He then pointed at Latasha. "I mean you personally."

"Yeah, I want you to do it, okay," Latasha said. She stood up.

"Okay," Allan said. There was a trace of a satisfied smile on his face.

Latasha walked out of the office.

Surprised at the sudden ending of the meeting, Jack got up and fumbled for one of his cards. "Just in case you want to ask me something," he said as he put it on Allan's desk. He helped himself to one of Allan's from a small Plexiglas holder. "I appreciate your help. Thank you."

"No problem," Allan said. The lingering smirk was still apparent.

Jack caught up to Latasha at the elevator. He didn't say anything until they were on their way down.

"That was a rather precipitous ending," Jack said. He pretended not to look at Latasha by watching the floor indicator.

"Yeah, well, he was getting on my nerves. He's such a cocky bastard."

"I sensed he didn't have a self-esteem problem."

Latasha laughed and perceptively relaxed a degree.

They walked out into the night. It was going on three, but there were still people on the street. As they neared the medical examiner's office, Latasha spoke up: "I suppose you wondered why I appeared somewhat rude."

"It crossed my mind," Jack admitted.

"Allan and I were tight the last year of college, but then something happened that gave me insight into his personality that I didn't like." She keyed open the front door and waved to the security person. As they started up the single flight of stairs, she continued: "I got a scare that I was pregnant. When I told him, his response was to ditch me. I couldn't even get a call back, so I wrote him off. The irony is that I wasn't pregnant. During the last year or so when he found out I was here at the ME office, he's tried to get us to connect up, but I'm not interested. I'm sorry if it was uncomfortable back there in his office."

"No need to apologize," Jack said. "As I said on the way over, I hope accepting his help won't cause a problem."

"With as many years as there have been, I'd thought I'd handle myself better than I did. But just seeing him made me pissed about the episode all over again. You'd think I would have gotten over it."

They walked into the library. The clutter was exactly as they'd left it.

"How about we take a look at the slides we stained?" Latasha suggested.

"Maybe you should go home and get some shut-eye," Jack said. "There's no reason for you to pull an all-nighter. I mean I love the help and the company, but this is asking way too much."

"You're not getting rid of me that easy," Latasha said with a coy smile. "I learned back in medical school that for me, when it's this late, it's better to just stay up. Plus, I'd love to solve this case."

"Well, I think I'm going to take a drive out to Newton."

"Back to the hospital?"

"Nope. Back to the Bowmans' house. I told my sister I'd look in on her husband to make sure he's not in a coma. Thanks to his depression, he's been mixing alcohol in the form of a single-malt scotch with some sort of sleeping pill."

"Yikes!" Latasha said. "I've had to post several people like that."

"Truthfully, with him I don't think it's much of a worry," Jack said. "He thinks far too much of himself. I doubt I'd even go if checking on him was the only reason. What I'm also going to do is check the biomarker assay kit he used with Patience to see if there is any reasonable reason to suspect he got a false positive. If it were a false positive, the possibility goes way up that the manner of death was not natural."

"What about suicide?" Latasha questioned. "You've never mentioned suicide even as a wildly remote possibility. How come?"

Jack absently scratched the back of his head. It was true that he'd not thought about suicide, and he wondered why. He let out a small chuckle, remembering how many cases he'd been involved with over the years where the apparent manner of death was ultimately not the correct manner. The last such case had involved the wife of the Iranian diplomat that was supposed to be suicide but had been homicide.

"I don't know why I haven't given even a passing thought about suicide," Jack said, "especially considering some of my other equally unlikely ideas."

"The little you've told me about the woman suggests she wasn't terribly happy."

"That's probably true," Jack admitted, "but that's the only thing the idea of suicide has going for it. We'll keep it in mind along with my hospital conspiracy idea. But now I'm going to head out to Newton. Of course, you're welcome to come, but I can't imagine why you'd want to."

"I'll stay," Latasha said. She pulled over Craig's and Jordan's deposition transcripts to a position in front of one of the chairs and sat down. "I'll do some background reading while you're gone. Where are the medical records?"

Jack reached for the correct pile and pushed it over against Craig's and Jordan's depositions.

Latasha picked up a short run of ECG that was sticking out of the stack. "What's this?"

"It's a recording Dr. Bowman made when he first got to Patience's house. Unfortunately it's almost useless. He couldn't even remember the lead. He had to give up doing the ECG because she was in such dire straits and rapidly worsening."

"Has anyone looked at it?"

"All the experts looked at it, but without knowing the lead and not being able to figure it out, they couldn't say much. They all agreed the marked bradycardia suggested an AV block. With that and other suggestive conduction abnormalities, they all felt it was at least consistent with a heart attack someplace in the heart."