When the Dutch East Indiaman Batavia struck an uncharted reef off the new continent of Australia on her maiden voyage in 1629, 332 men, women and children were on board. While some headed off in a lifeboat to seek help, 250 of the survivors ended up on a tiny coral island less than half a mile long. A band of mutineers, whose motives were almost beyond comprehension, then started on a cold-blooded killing spree, leaving less than 80 people alive when the rescue boat arrived three months later.