"Shades" is a series of short novels that don't short change on drama, pace, quality of writing or style.

It is ideal for readers who may find traditional teen novels too daunting, but still crave the excitement of clever plot lines, well-rounded characters and fast-paced writing. "Four Degrees More" is an environmental thriller about global warming, which opens with teenage Leyton watching his bedroom collapse into the sea as a result of climate change and rising sea levels.

He is soon caught up in a maelstrom of environmental campaigns and industry counter-plots, some of which turn out to be rather more sinister than he had bargained for...