A group of rival horticulturalists vie to secure the most coveted TV role as the nation's head gardener. It seems that at least one of them will go to any lengths to secure the glittering prize ...

Logan Carmichael has climbed through the ranks of television gardeners - despite knowing very little about plants, and his flowerbed-side manner leaves a lot to be desired. At the biggest flower festival of the year in Harrogate, he is the star attraction. 'The Ace of Spades' they call him. But when you get to the top, there's only one way left to go ... and there are a lot of people who would like to take him down.

The body discovered in Logan's front garden has been stabbed in the back by a garden fork. The nation's most beloved gardeners fear for their lives and the police are baffled by the strange game being played. It seems that underneath the blooming flowerbeds, fuelled by jealousy and envy, lurks something far less fragrant: revenge.

In this horticultural whodunnit, Britain's favourite gardener, Alan Titchmarsh, digs deep into a world where it seems that not everything is coming up roses.