Baldur's Gate Chapter 4 is the fifth part of Baldur's Gate. Once you have collected the letters from the trapped chest in the big tent in Bandit Camp Chapter 4 begins. If you want you can first go back to the Jovial Juggler and sell to Officer Vai any bandit scalps you have. The next time you talk to her without having any scalps on you she will give you your reward and leave permanently. On the third level there will be several hobgoblins to fight. Find your way to the southern most room and the exit should be there.