Rivers of London: Black Mould #4

Peter Grant: policeman, trainee wizard and now pest controller. Joined by fellow officer and Muslim ninja, Sahra Guleed, the two are trying to contain an outbreak of vindictive black mould that seems to be going after the rich and heartless. But after a successful mission, the mould has penetrated the headquarters of London’s crime-fighting magical practitioners – The Folly – and the shitake is about to get real…