When a body is hauled from the River Tyne, Sarah Tucker heads to Newcastle for a closer look. She identifies the dead woman as private detective Zoe Boehm, but putting a name to the corpse only raises further questions. Did Zo kill herself, or did one of her old cases come back to haunt her? Coincidence is an excuse that soon appears pretty unconvincing. Sarah can't leave until she's found the answers to her questions, however dangerous they might turn out to be.