‘Sotocastra,’ Savire said. ‘Soto means both “to open” and “to speak the truth”,’ Durral explained. ‘In anyone else’s hands that coin is just a dead hunk of metal. But a castradazi can use it to unlock doors or tell if a fella’s telling the truth or not.’ He gave a sniff as if the thing were beneath him. ‘Course an Argosi don’t need no coin to do those things.’
