Terrific Treasure

I pulled the bottle out of the wet sand and with some effort opened it and with even more effort I got the letter out.

I read it slowly, due to the poor handwriting, archaic language, and faded ink, but I got the gist of it, and the map with the 'X' was fairly intuitive. I worked out the island, sailed over and found the spot.

I was already thinking of how I would convert the treasure to useful cash when my shovel hit something.

Turns out "terrific treasure" meant stuff that caused terror, a reasonable mistake to make, really.