The first mate reports there's been another murder aboard the ship

the first mate reports that the third crew member today has been found murdered. All with long curved knives in their backs. In the morning the storm is over and gone but the ship has been left in the strange waters of another planet. The crew and you awake to the sound of tropical birds. Drifting by a island with trees sagging with ripe fruits. Everyone cheers and picks lunch on the shore. This seems to be some sort of paradise. The waters are filled with fish. So its fish and fruit and the men found streams of cold fresh water as well!

This place is so great you order the crew to build a couple cabins near the shore.