There are two people you can have arrested if you find all the evidence. You have to go to the morgue to see Roberts arrested before he appears in the jail.
There is another way out of the prison
interact with the skeleton
Nick's head isn't held by the pirates
go to the two dueling attractions in Cyseal
The burial mound can be completed the papers you find contain the clue.
To complete Arhu's Failed Experiment you must
talk to Yoranus. Ness one of the guys you saved from machine. He's guarding the treasure room in the prison
