ONE SALT SEA begins as Toby is getting her feet under herself in the wake of Oleander's return. She's running her county, getting a grip on the management of her knowe, and heading for a world of trouble as the sudden threat of war with the local Undersea looms.

Can she find the missing sons of the Duke and Duchess of Saltmist before people start dying? Or is it already too late? The fight is more personal than it's ever been before, and not everyone will be standing when the tide rolls out . . .