When half-sisters Kat, Flora, and Lauren are unexpectedly summoned to Rock Point, their wild and remote Cornish summer home, it's not a welcome invitation. They haven't been back since that fateful summer twenty years ago—a summer they're desperate to forget.
 
But when they arrive, it's clear they're not alone. Someone is lurking in the shadows, watching their every move. Someone who remembers exactly what they did...

Will the sisters be able to protect the dark past of Rock Point? Or are some secrets too powerful to remain under lock and key?