Tolo nods, but seems unconvinced.

So, this Herald of Tiamat, is loose on the world. He was summoned here, at this place, at this time. Presumably he has a task to complete. If there are six locations, either this place we've just cleaned up is one of them, or close to one of them. The Herald could have headed straight to their rendezvous to open the first gate and let in more demons.

Robert appears to know when and where this will happen. We head for that location, and either find the Herald, or thwart the opening of the gate. There was no sign of a gate being opened here, unless the presence of the Butcher counts?

The problem is that the Herald is supposed to be shapeshifter. Which means it is entirely likely that at some point we'll meet him in the guise of one the people we just met, or one of their guards. We need to be... careful.