John Constantine is, and has always been, a magician of the highest caliber-who doesnât need additional training from any highbrow magician, thank you very much. But a magical apprenticeship in the United States is a good excuse to get out of LondonâŠand in Washington, D.C., he can join his best friendâs punk band, Mucous Membrane. When the band begins to dabble in magic, a complicated spell gets out of handâŠand the disastrous consequences might be more than Constantine can handle.