Jack’s first thought was that the new slaves must be staging a mutiny and that his comrades were signalling for help. But the flashes emanated not from the quarterdeck, where the Cabal would make their last stand in a mutiny, but from a point down low and amidships: one of the oar-locks. It must be one of the new galériens, probably chained safely to his bench by now, but reaching out with a hand-mirror to flash signals to—whom, exactly?