London, 1854: twenty-year-old Essie Chapman lives with her father in poverty stricken Limehouse, working on the river as a boatman. Her life seems set before her, never to leave this part of London and forever at her father’s beck and call. Then, one night, she must transport a mysterious man from a foreign ship to the banks of the Thames, a man who ends up renting a room in Essie’s house, identifying himself only as ‘Raven’. When curiosity gets the better of her, Essie follows him and unwittingly becomes involved in something far greater than she could ever have guessed. Finding herself on a ship bound for the penal colonies in Australia with Raven and his cousin Alice, this is only the start of a remarkable journey taking her to the other side of the world and back again…