After dispatching other goblin, Theren decides to simply observe the various interactions.  It was obvious everyone needed a moment to catch their breath and the others appeared to have the interrogation of the remaining goblin under control.  Or at least as under control as any interaction with a terrified goblin could be.

Unfortunately, it quickly becomes obvious that there won't be any clear answers from the goblin, meaning that the only option left is to find some way into the keep.  And this time, Theren needs to remember to let the sturdier warriors go first.