An all-new and original Rivers of London comic series, written by Ben Aaronovitch and Andrew Cartmel! Set between 'Foxglove Summer' and ‘The Hanging Tree. A police vehicle on a routine prison transfer in north London is stormed by Russian hoodlums seeking to free a very particular prisoner. Their target is a witch. A very powerful witch who doesn't want to be free. Things rapidly turn very ugly for the hoods and it's soon a job for full-time police constable and part- time wizard, Peter Grant.