AllMovie

A man who knows the importance of clearing out the weeks in one's garden begins to wonder if the same principles apply to the people around him in this made-for-TV drama, inspired by a true story. Maj. Herbert Armstrong (Michael Kitchen) was an attorney and clerk to the magistrate in the Welsh community of Hay-on-Wye in the early 1920's. One of Armstrong's great passion was gardening, and he took unusual pride in the appearance of the greenery around his home. Cursed with a patch of stubborn dandelions, Armstrong purchased a large supply of an arsenic-based weed killer to put an end to the problem once and for all. But when Armstrong's wife Catherine (Sarah Miles) and rival in business Oswald (David Thewlis) -- both of whom had recently raised Armstrong's ire -- both turned up dead, apparently poisoned with arsenic, investigators began to wonder if this was really a mere coincidence.