The Barbary Coast, 1621. A mysterious vessel floats silently on the water. It is known only as the Ghost Ship. For months, its captain - Louise Reydon-Joubert - and her courageous crew has hunted pirates to liberate those enslaved during the course of their merciless raids.

But now the Ghost Ship is under attack – its hull splintered, its sails tattered and burnt, and the crew at risk of capture. But the bravest among them are not who they seem. Louise is fleeing a miscarriage of justice; her lover, Gilles Barenton, is at risk of being exposed - she is forced to masquerade as her brother. The stakes could not be higher: if arrested, they will be hanged for their crimes. Can they survive the journey and escape their fate?