UPDATED 9/5/08 6:28 p.m.: KNOXVILLE, Tenn. (WVLT) -- The so-called love-triangle murder trial may come down to how jurors answer one question. Was Eric McLean a jealous husband or a frightened father on the night he shot and killed 18-year-old Sean Powell?

Eric McLean’s attorney has been saying all along that the key to the case is what happened during the seven minutes between the time his client called 911 to report that Powell would not leave his home and a second 911 call from Erin McLean saying Powell was dead.

Now, jurors have heard the calls for themselves.

Eric McLean listened in court as prosecutors play tapes of two 911 calls made on the deadly night.

On the 911 tape, Erin Mclean says, "My husband just killed someone.”

A dispatcher says, "How did he do it."

Erin McLean says, "He shot him in the head, with a shotgun."

That was not the first call from the McLean home to 911 on the night Sean Powell was killed. Seven minutes earlier, Eric McLean called 911 himself saying Powell was trespassing in his home. How did the situation turn so violent so quickly? McLean's attorney, Bruce Poston, says it's because Powell convinced McLean thought he was about to lose his two young sons to the young man who was already having an affair with his wife.

Eric McLean’s attorney Bruce Poston told the court, "He hears someone look at him and say 'in two weeks, they'll be calling me daddy'". "

Poston says Powell spoke those words while sitting in a car as McLean stood nearby armed with a rifle, begging him not to take the kids away. He says Erin McLean had just said some cruel words to her husband too.

Poston says, “She just said 'you are so week. Sean's ten times the man you are and I don't want my boys around someone like you. He's much better for them.'"

Police officers testify that Erin McLean sounded different minutes later when Powell lay dead in a car outside her house, going from shocked and yelling “Oh my God," to angry and saying, “I can't believe that he just killed him."

The defense hopes jurors will eventually see this was a crime of passion, manslaughter at worst. The prosecution says McLean is guilty of premeditated murder, a jealous man but not one who was suddenly shocked to discover his wife's affair.

Assistant District Attorney General Bill Crabtree says, "They agreed that they could see other people, so relationship between Sean Powell and Erin McLean was no secret to Eric McLean."

Since the jury is sequestered in a hotel anyway, they've decided to do some work this weekend.

Testimony will continue Saturday afternoon and again on Sunday.

You can keep up with the trial on Volunteer TV News and VolunteerTV.com where you can find a live Web stream whenever court is in session.

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UPDATED 9/5/08 2:50 p.m.: KNOXVILLE, Tenn. (AP) -- A school teacher's husband charged with murder in the fatal shooting of his wife's teenage student lover was either a calculated killer moved by jealousy or the victim of a spouse who flaunted her infidelity.

Lawyers made those arguments Friday in Knoxville to open the murder trial of 33-year-old Eric McLean.

McLean is charged with first-degree murder in last year's death of 18-year-old Sean Powell, the student who fell in love with McLean's wife. Erin McLean was a 29-year-old student-teacher at the time.

McLean has acknowledged shooting Powell, but claims it was an accident.

(Copyright 2008 by The Associated Press. All Rights Reserved.)

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KNOXVILLE, Tenn. (WVLT) -- Eric McLean's love-triangle murder trial is underway after two days of jury selection in a downtown Knoxville courtroom.

Eric McLean has admitted to killing Sean Powell, 18. Powell is believed to have been the teenage love of Erin McLean, Eric's wife and Sean Powell's student-teacher at West High School.

Eric McLean is charged with first degree murder, but his attorney says the charges should be manslaughter.

Volunteer TV court reporter Rob Pratt is in the courtroom, and the entire trial is being streamed live on VolunteerTV.com. Just CLICK HERE for the Web stream.