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 own 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, with no one to trust but themselves and Lawrence Kingston, a gardening expert to whom they have revealed their exciting secret---the only way they can save their lives is to unravel the dark, seductive secret of the Blue Rose.