Alex and Kate Sheppard have found the perfect house; the home they had always dreamed of owning. Nestled deep in the Wiltshire countryside and surrounded by a two acre walled garden, The Parsonage was to be their little paradise?but nothing stays perfect forever.

Soon after moving in they make an impossibly exciting discovery?one that defies every known law of nature and science. They find a blue rose bush flourishing in their walled garden. But as word of their discovery leaks out, the Sheppard's peaceful existence is shattered and they find themselves plunged into a world of coded journals, genetic experiments, cold-blooded greed, and ultimately, murder.

Threatened from every direction, Alex and Kate can trust no one but themselves, and the only way they can save their lives is to unravel the dark, seductive secret of the blue rose?