"Crowds gathered on the northern and eastern promenades, straining against the glare of the cloudless early-morning sky for their first glimpse of the airship." The wild pod of Syrenis beneath the town is dwindling. Gentleman explorer Basil Foagues and his airship offer a chance to revitalise the population, but the Syrenis hold a dark secret that threatens the voyage. Martlet is working with Splinterton's diplomatic team. Her violent past and unconventional methods send her on a wild adventure to the ends of the British Peninsular. And then there is the secret hidden beneath the Iron Age fort...