Families can be strange. Grandpa hated the sunshine, and waited eagerly for dusk. “It's too hot,” he complained bitterly.

And then he told them about the treasure.

“When I was 5 years old, my grandfather told me a secret,” he said, “and then insisted I make him a promise. ‘If you live past 80 years old, you can tell it to your grandchildren,’ he'd said.” Grandpa fanned himself with a magazine. “This secret has traveled 150 years. It's the story of Dead Man's Island.”