It begins like this. With the dusk and the storm and the Thames… A storm rages and, in the darkest part of the night, a body is pulled from the swirling Thames. Across the city, two young women confront an uncertain future. In Limehouse, Lizzie Hexam struggles to break free of the river and its dark secrets. On the other side of town, Bella Wilfer mourns a lost marriage. The appearance of the mysterious John Rokesmith has the potential to change their lives for ever. Will they sink or swim? This romantic and propulsive thriller is a hymn to the city and the river that runs through it.