Laura Thyme is a former policewoman whose husband has abandoned her for a younger woman; Rosemary Boxer is a plant biology lecturer whose academic career is cut short. A sudden death brings them together and they discover their shared love of gardening and natural inquisitiveness. Together they search for work as gardeners, however, mysteries have a habit of following them around!In this third series the girls find themselves invloved in more mystery and suspicious circumstances; filmed on location in some of the most beautiful gardens in the UK and Spain.