Clarifications: This entire time a mage of indeterminate strength had been invisible hiding somewhere. He appeared behind Tores by firing a volley of magic missiles that smacked up Sul'Dan pretty bad (they look very similar to the ones that beat up Arcanra). I will also be clear in that with the dagger to the throat, I don't roll for damage, I roll a percentile, there is an 80% chance the opponent succeeds in slitting the throat and causing death (2 rounds). If the roll is below 30% it is death in one round. And at minimum, it will be a critical hit. (This is both for clarification and realism) Also, the mage doesn't appear to have noticed Gavin. The guide is nowhere to be seen.
The mage continues "I only want to get out of here, keep your weapons where I can see them, and retrieve some valuables from around the caravan for me to take with me in my escape." He turns to the party with a sly look. "In fact, I know of a secret compartment with something that may interest you, In return for a portion of the gold and my freedom I'll tell you where it is, without me though, you'll never find it!"