Rivers of London by Ben Aaronovitch

Rivers of London is the first of an urban fantasy / crime fiction series, that follows the adventures of a rookie copper-turned-apprentice-wizard, Peter Grant, and his boss, the last wizard in England. A unique blend of police procedural, supernatural mayhem and threads of fascinating hidden history woven through the very fabric of the plot, Rivers Of London is fast-moving, funny, full of warmth and features at its heart one of the greatest and most historically rich cites in the world: London.

The fifth in the series, Foxglove Summer is published in hardback on November 13th 2014. The other three books in the series, Moon Over Soho, Whispers Underground and Broken Homes are all available in paperback.