I discovered Glen Grant’s noirish Honolulu detective Arthur McDougal in Grant’s collection Obake: Ghost Stories in Hawaii. The two McDougal tales in Obake have supernatural villains, so one could say that McDougal in these stories is a (reluctant) occult detective. The other tales in Obake, which mostly focus on aspects of Japanese supernatural folklore that “migrated” to Hawaii, are also delightful.
The short stories in Honolulu Mysteries are different. Although the tales include various aspects of Hawaiian folklore and sometimes even feature a touch of Hawaiian supernatural phenomena, the bad guys are all definitely human — just as they ought to be, in McDougal’s view.