Bugliosi knew she was guilty
If you read the book "And the sea will tell" Bugliosi questions Stephanie's innocence many, many times. He talked about matters that never came up in either her trial or Bucks. Some examples are the stolen wallet of the dentist that was found aboard the Sea Wind. This didn't have anything to do with the murder trial, but as Bugliosi stated, it did show that Stephanie might have been involved with crimes with Buck before the murders. This dentist went to the police after Buck and Stephanie refused to allow him to look for it aboard the Iola in Hawaii after he had a visit with the couple.
Bugliosi went to great lenghths to find out about the ants getting into Muff's bone marrow and how long it would take for the ants to get in. This could have shown that the body was not disposed of right away and that there was no hurry on Buck's part to hide the body from Stephanie. An expert stated that the ants could have gotten in at any time before the body went into the water, or after it was found if there was enough oil left in the bone.
The high tide evidence was the same way. There was some confusion as to when High tide came in on Palmyra. Stephanie lucked out on a few pieces of evidence that wasn't able to be conclusively proven.
I am glad that he brought out his doubts about her innocence in his book instead of choosing to leave incriminating behavior and evidence out. This woman got away with murder, but maybe if people around her have read the book, they will see how she behaved and be able to hear about her lies and see her for what she really is.