The Loyalty of Dogs and Men — Stuart Jaffe

Marshall Drummond, private investigator of the strange and bizarre, can't seem to avoid trouble. It doesn't help that he has a knack for ticking off magic-wielding people. When his past exploits catch up with him, the time arrives to deal with those old problems. Namely, one Mr. Howe. Because if Drummond doesn't put an end to it all, Mr. Howe might put an end to Drummond.