River Tern

In the novel Towards Zero, the River Tern is a river in Cornwall. The towns of Saltcreek and Easterhead Bay are located on opposite sides of the mouth of the river. Agatha Christie's map at the front of the novel is a fairly accurate representation of the Salcombe/Kingsbridge area and this makes the Kingsbridge estuary the real world parallel or setting of the River Tern.