Essef - Darkworld Detective is a fantasy detective novel. Kamus of Kadizar is the one and only private eye on Ja-Lur, the Darkworld, where science and sorcery uneasily co-exist. A half-breed Darkworlder, he has visited Earth through a limited cultural exchange program, where he discovered the vocation of private investigator and determined to bring these functions back to the Darkworld. The Darkworld is a planet that is partially overlapped by the Darkness, an adjacent universe where magic can be effected by rituals. Those having the Blood of the Darklands can manipulate such magic by word and potions. The Darklord has the strongest magic, but his son Jann-Togah is also very powerful. Kamus has some magical abilities, but they are relatively weak.
Used availability for Michael Reaves's Darkworld Detective
May 1982 : USA Paperback