You chose to set him free.
Unfortunately detective, William Barnett is a man of habit and after being set free, got into an argument with a settler and murdered him. William was promptly arrested for the crime and sentenced to death.
He was hung on 13th May 1788.
Upset that your decision to let him go cost a life, you returned to England, wanting nothing more to do with the colony at the end of the earth.
Now you must compile your information report. Go back and review all the information so you can present the most detailed poster.