High Quality Content by WIKIPEDIA articles! Murvel Russell Sellars, Jr. (M. R. Sellars) (born February 20, 1962) is an American paranormal, thriller, horror, and mystery writer. He is best known for his Rowan Gant Investigations series about a practicing Witch turned occult detective, who aids the Saint Louis police department in solving bizarre crimes. He is a member of the International Thriller Writers, and a former member of the Horror Writers Association.