"The evidence is going to show clearly beyond any doubt that not only is Scott Peterson not guilty but Scott Peterson is stone cold innocent," Mr. Geragos said.
http://www.nytimes.com/2004/06/03/national/03peterson.html?th

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Prosecutors believe that Peterson killed his wife either on the night of December 23, 2002, or in the early morning hours of Christmas Eve. Then, they allege, he used his fishing boat to dump her body in San Francisco Bay.
http://www.cbsnews.com/stories/2004/06/02/48hours/main620764.shtml

But there may be a problem with that timeline: The day before Laci disappeared, a doctor estimated her unborn baby was 32 weeks old. But the baby's body that washed ashore four months later was more developed.
According to Darden, the fetus has been determined to have been between 34 to 40 weeks old. "Hence, the argument that Laci Peterson didn’t die on Dec. 23rd, as the prosecution asserted," he says. "We know that he couldn’t have done it after that, so who did?"

What’s more, there were at least three people who say they saw Laci walking her dog mid-morning on Christmas Eve, hours after prosecutors believe she was killed.