The unsinkable Walker Bean and the knights of the waxing moon

After their perilous encounter with the sea-witches the pirate crew of the Jacklight find refuge on a deserted island but shadowy creatures have been spotted in the jungle and when Walker Shiv and Genoa discover mysterious ruins the dark history of the archipelago begins to unravel. Legend tells of a mad king a fallen civilization and a powerful royal family in search of their lost sister. And for reasons Walker can't understand Genoa seems to be at the center of it all.