The Last Alibi

62

Jason

Court reconvenes after lunch. Roger Ogren stands, flattens his tie, buttons his coat, and says, “The People call Special Agent Dennis Jumer.”

The local cops still bring in the FBI a lot to assist with cell phone technology, most notably tracking the movements of suspects by their cell phone usage. We used this historical cell site analysis on occasion when I was working Gang Crimes at the county attorney, but nowadays they’ve taken this stuff to an art form. There are agents like Jumer who basically do nothing else but check cell phone records and put dots, or circles, on a map.

“I’ve been a special agent with the FBI for almost eleven years,” he tells Ogren. “I’ve been assigned to our Narcotics and Firearms Task Force for the last five.”

“As part of your duties, do you analyze cell phone records?”

“Yes, that’s the largest part of what I do these days. I typically do historical cell site analyses on cell phone records.”

“Why do you conduct historical cell site analyses, Agent Jumer?”

“The purpose is to determine the approximate locations of cell phones at the time the calls were placed that are detailed in the records.”

A cell phone is a radio, and when it’s used it sends out radio frequencies in all directions. It will hit multiple towers belonging to that service provider, and that provider will have a switching channel that will pick which of its towers should provide service to the cell phone. Each tower has its own identifier, and the service provider records that particular tower in its call detail records.

So when you call somebody on a cell, the FBI can go back later and say, at this day and time, you initiated a phone call, and this was the tower that provided service to that phone. The tower providing service is usually the one that’s closest to the cell phone’s location, but not always, especially in an urban area with high call traffic. So it’s not an exact science.

If this were an area of contention with us, we’d have some basis to go after this witness. In fact, as a defense lawyer, I once had Dennis Jumer on the stand for half a day, berating the FBI’s methodology and criticizing them for not using triangulation or GPS, which are more accurate. I assume that Jumer remembers that day, and me.

Agent Jumer talks for a while about his credentials and experience; then he turns to the details of this case. He was brought in by the county attorney’s office to analyze the cell phone records of Alexa Himmel and me for the week preceding her murder.

“We obtained the records, by subpoena, from Ms. Himmel’s service provider and Mr. Kolarich’s service provider,” he says.

“People’s Eighteen, Judge. There was a stip on this.” Roger Ogren displays on the screen a summary chart of phone calls made by Alexa’s cell phone to my cell phone, or landline, or office, on the date of Friday, July 26.

Shauna nods to the judge. “It will be admitted,” says Judge Judy.

“Did you prepare this chart summary?” Ogren asks Jumer.

“I did.”

“Please tell the jury what it shows.”

“This chart shows calls made from Ms. Himmel’s cell phone to either Mr. Kolarich’s landline number, his cell phone number, or his direct line at his law firm, as well as the date and time of those calls, the length of time, and the cellular tower that originated the call. For privacy reasons, rather than using the actual phone numbers, we denoted Mr. Kolarich’s cell phone as ‘Kolarich Cell,’ his landline at home as ‘Kolarich Home,’ and his direct office line as ‘Kolarich Office.’”

“And is this chart limited in time, Agent?”

“Oh, yes, I’m sorry. Yes. This chart covers phone calls made by Ms. Himmel’s cell phone only for the date of Friday, July twenty-sixth of this year.”

“Just a one-day period?”

“Just a one-day period. Twenty-four hours. Just Friday, July twenty-sixth.”

The jury probably remembers the first e-mail from Alexa that was introduced into evidence, the Why won’t you return my calls? e-mail that was dated Saturday, July 27. They are about to see all of the calls that I wasn’t returning.

CALL DETAIL RECORDS FOR CELL PHONE OF ALEXA M. HIMMEL

Friday, July 26

Time

Destination

Length of Call (minutes)

Originating Cell Site

10:32 AM

Kolarich Cell

1

221529

2:47 PM

Kolarich Cell

1

221529

2:59 PM

Kolarich Cell

1

221529

3:12 PM

Kolarich Cell

1

221529

3:13 PM

Kolarich Office

1

221529

3:15 PM

Kolarich Cell

1

221529

3:58 PM

Kolarich Cell

1

221529

4:45 PM

Kolarich Cell

1

221529

5:22 PM

Kolarich Cell

1

221529

5:23 PM

Kolarich Cell

1

221529

7:02 PM

Kolarich Cell

1

221529

8:28 PM

Kolarich Cell

1

221529

8:29 PM

Kolarich Home

1

221529

8:31 PM

Kolarich Cell

1

221529

9:46 PM

Kolarich Cell

1

221529

10:37 PM

Kolarich Cell

1

221529

11:14 PM

Kolarich Cell

1

221529

11:17 PM

Kolarich Cell

1

221529

11:21 PM

Kolarich Cell

1

221529

11:25 PM

Kolarich Home

1

221529

11:27 PM

Kolarich Cell

1

221529

11:32 PM

Kolarich Home

1

221529

11:47 PM

Kolarich Cell

1

221529

11:49 PM

Kolarich Cell

1

221529

“That’s twenty-four phone calls,” says Jumer, when asked. “Twenty-four phone calls in a twenty-four-hour period. Really, a fourteen-hour period.”

“Agent,” says Roger Ogren, “I see that each of these calls says that their duration was one minute. Does that mean that each call was precisely sixty seconds?”

“No, obviously not,” Jumer replies. “This particular service provider-like all of them, I believe-charges you for a minute of time the moment a call is placed. So a ten-second call is charged as one minute. A fifty-nine-second call, charged as one minute. We are limited to what the service provider can give us, and they don’t go lower than one minute.”

“So does this mean that every call made from Ms. Himmel’s cell phone to one of Mr. Kolarich’s numbers was less than one minute?”

“Yes, it does. Sixty seconds or less.”

“Does the service provider differentiate, to your knowledge, between calls that are received by a live person and calls that are received by that person’s voice mail?”

“No, there’s no difference. All this computer knows is that the other line picked up.”

“So it’s possible that some or all of these calls made by Ms. Himmel went to voice mail.”

“It’s possible, sure. Common sense says it’s likely. But it’s impossible to know.”

“Fine, that’s fine.” Ogren clears his throat. He’s sounding a little nasal today, the onset of a cold. Trials can be murder on your health, though I usually didn’t get sick until after it was over, like my immune system knew when it was okay to surrender.

“Agent, the farthest-right column refers to the ‘originating cell site.’”

“Yes. That’s the tower that provided service to her call.”

“And did you estimate the range of coverage of that cell tower?” Ogren puts up a chart of a map of the city and the near-south suburbs, including Overton Ridge, where Alexa lived.

“Yes. This map shows the estimated range of coverage of cell tower number 221529,” he says.

The map has a large red triangle at the location of that cell tower. From that red triangle, a large yellow-shaded area fans out to the east, about a third of a circle, showing the estimate of the range covered by that cell tower.

“This cell tower, like many in urban areas, is directional,” says Jumer.

“What does that mean?”

“Well, in some places, cell towers are omnidirectional, meaning they send radio frequencies in all directions. Imagine dropping a pebble in the water and watching the ripple. The ripple goes in all directions. That’s omnidirectional. But many cell towers in high-population areas, like this one, are sectored. This tower has three sectors. So this area of coverage you see here in the highlighted area? That’s about a hundred twenty degrees, or a third of the circle.”

Ogren uses his pen to point to a small X within the highlighted area of coverage. Popping off that X on the exhibit is a bubble containing the words Alexa Himmel Residence. “Explain this X and this bubble next to it, Agent.”

“As you can see, Ms. Himmel’s home residence is located within the highlighted area of coverage that this cell tower provides,” says Jumer.

“So these phone calls-how many phone calls were there?”

“Twenty-four phone calls,” says Jumer.

“Each of these twenty-four phone calls was made using the same cell tower’s service.”

“Correct.”

“A cell tower that covers Ms. Himmel’s home.”

“Correct. We can’t say for certain that she made those calls from home. We can say for certain that the cell tower feeding her RF on each of those calls covered her home.”

Shauna catches my eye. I give a Who cares? shrug. We could argue with the agent on this point, but twenty-four calls pinging the same cell tower? Of course Alexa made those calls from home.

And that, of course, is one of the nice things about this evidence for the prosecution. They are using this evidence primarily to show Alexa’s desperation, leading her to blackmail me with that letter to the Board of Attorney Discipline, leading me to kill her to cover up my addiction to painkillers. But this evidence also helps them show that, over the days that preceded her death, she was living at home, not with me-a nice reminder to the jury of one of the many things I lied about in the interrogation.

“Let’s move to the next day, Saturday, July twenty-seventh,” says Ogren. “Did you obtain a list of phone calls made from Ms. Himmel’s cell to one of the defendant’s numbers on that day?”

He did, and another summary chart is admitted into evidence. There were more calls for Saturday than for Friday, because it was a full day of calls, beginning at the dawn of the day-twenty minutes after midnight-and continuing all the way until the day’s end, at 11:51 P.M.

“She made forty-seven phone calls to Mr. Kolarich on that day,” Jumer summarizes. “All of them for one minute or less.”

“And then, Sunday, July twenty-eighth, Agent.” They go through the same routine, producing a summary chart, admitting it into evidence.

“Sixty-three calls on that date,” says the agent.

“And Monday, July twenty-ninth, Agent Jumer. The day before Ms. Himmel’s death,” he reminds the jury. Another chart, same basic result.

“Fifty-nine phone calls on that date to Mr. Kolarich’s cell phone,” Jumer says.

One of the jurors in the front row, a schoolteacher, is doing the math on his notepad: 24 calls on Friday + 47 on Saturday + 63 on Sunday + 59 on Monday = 193 phone calls she made to me in four days.

We’ve known this evidence was coming, of course, and I’ve always wondered how it would cut. On the one hand, it makes Alexa look wildly unstable, and I had a glimmer of hope that maybe the jury would start to turn on her-kind of a Jesus, lady, get the hint and move on sentiment-and feel some sympathy for me. Maybe some of the men on the jury, who’ve had messy breakups, might feel a kinship with me. Maybe some of the women, who usually are more critical of other women than are men, would lose patience with her.

That was a possibility, a hope. But it’s one of those things that you can’t predict, dependent on the circumstances, any number of factors; I knew I’d have to wait until the evidence was laid out and the jury reacted to know its impact.

Now it’s been laid out. Now the jury has reacted. And I don’t see anyone experiencing any pangs of sympathy for Jason Kolarich. Quite the opposite. They are seeing a desperately sad woman who, unbeknownst to her, is about to be murdered, and a cold, unfeeling man who broke her heart. And probably took her life, too.