I believe I did read that. Maybe about a married couple who were sailing, were murdered, their boat stolen...? Could be a TV movie was made about it?
Correct on both counts. Palmyra was the name of the atoll. Bugliosi handled the retrial of the woman who was initially charged with murder, and eventually acquitted. I never saw the movie, but did read the book some 15 years ago, so I may be fuzzy on some details.