In deepest Cornwall, the mansion Kittiwake has seen many pass through its doors since it was bought by American heiress Peggy Carmichael seventy years ago.
Over the decades, the keys have been handed down through the family, and now it belongs to Bel's adoptive brother, Lance. It's where he'll be celebrating his 50th birthday, and Bel is invited.
But in going back to Kittiwake, Bel will be returning to the place where it all began - where, following the death of a child, a sequence of events was set in motion years ago, the consequences of which are still rippling down through the generations...