Rosemary Boxer and Laura Thyme, two plant and flower lovers, meet and hit it off while searching for the cause of two mysterious accidents concerning a very poisonous plant.
When the rich widow hiring Rosemary and Thyme to restore a garden and waterfall is murdered, a gardening book written by her late husband may hold the key to the solution.
The girls are restoring a churchyard and cemetery in time for a Medieval festival when an unpopular villager is murdered with an arrow through the chest.