You go to the only person who knows that still knows that this island exists, William Smith, NPC version, on Port Royal, Fort Charles by the gyspy in the tents. He just writing some notes as you approach him. Cutscene: "Who are you, what do you want? Oh looking for Isla Inferno. Bad idea mate going to that place is worse than hell itself. Fine. I'll tell you where it is but don't tell anybody that I told you where it is. Big trouble I could get into if people find out where it is. By the way mate, this infomation ain't free. 100 Noteriety