Quest "Prison Business"

[ARTHUR]

Well some tips for this mission.

It happened to me when i run the caribbean in nutshell and was in porto bello.

Go to the jail. pay 30 gold doublons the officer to have permit visit the jail. There try to speak one guy (suppose name is random)

if it runs to you, the quest is "prison business". normally a guy comes with you to a grotto (for me it is dominica but perhaps random too. then, arrived in the grotto, tue guy retrieve his treasure and give you the half + an amulet.
i got 45 Gold nugget, 30 Silver nugget, 21 Platinum ingot, 1 Meteorite, 55 copper ingot, 13 iron ingot and 94 jacinth (perhpas loot random ?)

Hope it helps you