The Detective's Guide to Practical Sorcery

Reiko Hisakawa just might be the only detective in New York that has mastered both sleuthing and spell-casting, and all of this despite being a chronically ill teenager. But her life gets even more complicated when her best friend, the headmistress of the exclusive North American University of Sorcery, drops dead one day.

The new headmaster turns out to be a novice who's in way over his head, and now Reiko, guided only by her wit and an odd set of diaries bequeathed to her by her late friend, has to work with her new "apprentice" to solve New York City's mystical mysteries.