Laura Thyme and Rosemary Boxer team up and while indulging in their horticultural sideline, solve mysteries along the way. Laura is invited to visit Daniel Kellaway at his country house Winterbourne Manor. Daniel relies on Sam his business partner to keep their successful garden centre business going. But after a fatal car crash followed by puzzling accidents, Laura and Rosemary sense trouble. Rosemary's horticultural knowledge combined with Laura's former police background, aid the pair in their search for truth and in the investigation into the crimes.