Here we go, explosives arguments launched at the michael jackson wrongful death trial. Both sides came out swinging and abc's david wright has the story. Reporter: Michael jackson's wrongful death... See More
Here we go, explosives arguments launched at the michael jackson wrongful death trial. Both sides came out swinging and abc's david wright has the story. Reporter: Michael jackson's wrongful death trial opened with videos. Watching him performing in munich in 1999. Later rehearsing for what was to have been his comeback tour. That was just two days before he died. The question before the jury, who is really to blame? Conrad robert murray, guilty. Reporter: Jackson's doctor conrad murray is already behind bars for involuntary manslaughter but now jackson's mother and three children are suing the concert promoter that paid murray's salary. The cornstone of their case, an e-mail from aeg's ceo 11 days before jackson's death. We want to remind murray that it is aeg, not mj who is paying his salary. We want to remind him what's expected of him. The worst thing that aeg's got going for them, the worst, is that e-mail. Reporter: So once they agreed to pay $150,000 a month you're saying they're liable. Right. That's going to go a long way. Reporter: But aeg's lawyer told them the promoters didn't hire but jackson did. The truth is michael jackson fooled everyone, aeg's lawyer said, he made sure no one, nobody knew his deepest, darkest secrets. The plaintiffs call their first witness. For "good morning america," david wright, abc news, los angeles.
This transcript has been automatically generated and may not be 100% accurate.