Dark Sun: TDH
Kaldras hired the PCs as guards for his caravan of iron goods. On the journey he was irritable and short. Upon arriving in Altaruk’s elven market, he and his tribe turned on the PCs, attempting to take them prisoner and sell them into slavery.
It’s clear that there’s more here than meets the eye, but you aren’t sure what. At this moment Kaldras is a prisoner of the Altaruk town guard and nursing some nasty bumps and bruises from the arena, but still very much alive.