Acquiunk wrote:If there is no hard evidence, on what grounds was he convicted?
What do you mean by 'hard' evidence?
The mountain of so-called circumstantial evidence is very often, absent elimination by DNA, considered 'hard,' as it was in this case.
Please don't forget the DNA match from the strands of his wife's hair found in the pliars on the boat he used to transport her dead body. Then there is the fact that he bought the boat without telling anyone. He reseached the tides to find what time would be best for a body to wash out into the sea. He made concrete anchors to weigh down his wife's body. He laughed when his own mother told him there was a 'Laci-sighting' in Washington state. He showed 'consciousness of guilt' by being apprehended on a golf course (perhaps searching for the "real killers" ... oh, wait, that's been done) with thousands of dollars, a new car purchased & registered in his mother's name, lots of little incidentals which need not be mentioned here, and a spiffy new look *cough* ...
For a a better and more complete explanation, please see:
The Laci Peterson Case