The Debutante and the Smuggler's Son

She was engaged to the heir. She fell for the secretary. Jasper Reeve has spent nine years as secretary to a dying lord, keeping the ledgers, answering the letters and never asking a question. Rosalind Trevane is nineteen, newly out in London, and engaged by her mother to the lord's heir. She does not expect to like the secretary. She certainly does not expect to trust him.
Then a blackmailer from Jasper's past asks for one more night on the Dymchurch Wall, and a landing of forged Bank notes. Jasper is the son of a Marsh innkeeper's wife, with a guilt he has carried since 1807. Rosalind's father owes a gaming-house keeper nine thousand pounds, and the same man holds her fiancé's notes.
Rosalind has been taught to be agreeable. She finds that she can also be brave. She follows Jasper to the Marsh, sits with a dying woman, learns what a name is worth, and discovers what happens when a girl who has always said yes decides to say no.
The storm tide is coming. There is a sluice gate, a great iron wheel, four old keys, and one night to hold the sea.