Summer 1924: On the eve of a Society party, by the lake of a English country house, a young poet takes his life. The only witnesses, sisters Hannah & Emmeline Hartford, will never speak to each other again. Winter 1999: Grace Bradley, once a housemaid of Riverton Manor, is visited by a director making a film about the poet's suicide. Ghosts awaken and memories long put out of Grace's mind, begin to sneak back through the cracks. A secret threatens to emerge; something history has forgotten but Grace never could.