Rosemary & Thyme S03E03 - Seeds of Time

The duo help reorganise the seed museum owned by the descendants of famous botanist Edwin Pargeter - but it is not long before a man is found dead in the family's garden. In an effort to trace his killer, Rosemary involves colleagues from the Royal Horticultural Society at Kew Gardens, and soon the race is on to identify a batch of mysterious seeds before it falls into the wrong hands.