Secrets of a Scottish isle

A wild 1927 adventure on a Scottish island includes a mysterious cult and a murder. American private investigator Jane Wunderly and Redvers, her English fiance, have shared many dangerous undertakings. So a trip to the isle of Iona to vet Robert Nightingale, a cult leader who's proposed himself to the British government as a possible agent, seems relatively easy. Posing as a new initiate to the Order of the Golden Dawn, Jane soon decides that Nightingale would make a terrible spy. Instead, she takes more time to investigate the cult and its followers, which include several women and the Irish poet William Butler Yeats. Given the limited housing on the island, Jane's sharing a rented room with Netta Fornario at the McCrary cottage; Redvers, who must keep out of Nightingale's sight, meets her at a ruined chapel and a deserted beach for reports. Netta's been acting very oddly, and when Jane finds her dead under mysterious circumstances, an investigation is clearly in order. Two wills turn up, one leaving Netta's considerable estate to Golden Dawn, the other leaving it to her estranged father. Together they seem to provide at least two parties with a motive for murder. Now that Golden Dawn has split into two rival factions, the wife of the original leader, who's staying on the nearby Isle of Mull, may be able to provide Jane with help. Despite a thorny thicket of clues, the truth is finally revealed. Some historical tidbits and a starkly beautiful landscape add interest to a middling mystery. Copyright (c) Kirkus Reviews, used with permission.