1999: Three teenage half-sisters - Lauren, Kat and Flora - are staying at Rock Point, a remote Cornish house, under the neglectful eye of their artist father. They sit for his famous portrait, Girls and Birdcage. And hide a devastating secret. 2019: A winter reunion at Rock Point - it's the first time they've been back since that summer and they're trying to put it behind them... From the author of Sunday Times bestseller 'The Glass House'.