Note: To kill this mob you must pay attention to the red script message that pops periodically through the fight. The message basically says the hell-hound is about to regurgitate on you and in order to save yourself you must get behind some crates or counter and crouch (have to actually use the crouch command (default "z" on the keyboard), not sit). If you fail to do so in time, you are one-shot dead.
He tells you that you were too late and he is now under investigation by the Committee; of course, you now need to kill them. Kill Ryvast, Kill Trysk, and Kill Nymeer. ( -62, -77, 90 ) /waypoint -62, -77, 90
Destroy any evidence they may have collected against Captain Boshinko - 12 clicky pages on the ground in the Globe room(High Keep (2nd)).
Place evidence in Higginsbot's old jail cell
You need to kill an "undead warden" who wanders in the lower regions and loot "a skeleton key" which is a body drop. It is LORE TEMPORARY which means it despawns when you use it, zone out or when you camp. Track would be useful here. (found him twice at ( -72, -110, 27 ) /waypoint -72, -110, 27 look up)
The jail door is at the bottom of the stairs on the right when you go down into the tunnels from the Casino area. ( -103, -145, -183 ) /waypoint -103, -145, -183