Keeping details straight while writing a chronologically organized series is difficult enough. Focusing four full-length novels on the events of a single group experience in a single year, with back stories and future developments for a small group of heroines, each of whom has a chance to tell her own story of the central event and its consequences, requires even greater skill. Yet Karen Swan pulls off this mammoth enterprise in her Wild Isle series, which concludes with The Midnight Secret (Macmillan, 2025).

The Last Summer, the first book in the series, opens in June 1930 with three friends sitting on a rock plucking fulmars, a kind of seabird. Effie, Mhairi (the Gaelic form of Mary, pronounced VAH-ree), and Flora already know that they will have to evacuate their island home in the Outermost Scottish Hebrides within a few months. Flora greets the change with enthusiasm, Effie with cautious pragmatism, and Mhairi with despair. From this first book and the two that follow, The Stolen Hours and The Lost Lover, we discover what drives each young woman’s response. We also delve ever deeper into the circumstances leading up to a mysterious death, highly unusual in the history of this isolated island with its tightly intertwined population of thirty-six individuals.

The Midnight Secret begins in 1926 with the perspective of Jayne Ferguson, the slightly older wife of a handsome but, she soon learns, abusive man. It then jumps forward to 1930. From her mother, Jayne has inherited a particular form of second sight that shows her the faces of people in her vicinity who are destined to die soon. The visions haunt her until the death occurs, but they do not come with useful information about what will cause it or how to prevent it. Sometimes even the “who” remains murky at first.

The combination of this rather disturbing gift and what Jayne sees as the necessity to conceal her husband’s abuse erect a barrier between her and those around her, especially after the transition to the unfamiliar landscape of the Scottish mainland. At the same time, Effie, Mhairi, and Flora are wrestling with the consequences of their own prior choices as well as the difficulties of adapting to a completely unfamiliar world. And as things heat up, with various characters accused of involvement in the mysterious death, Jayne’s extrasensory ability becomes ever more important to the survival of her community even as it undermines her already rocky relationship with her spouse. 

Karen Swan is the bestselling author of twenty-eight novels to date, most recently The Midnight Secret and All I Want for Christmas. 

C. P. Lesley is the author of two historical fiction series set during the childhood of Ivan the Terrible and four other novels. Her Song of the Steadfast (Songs of Steppe & Forest 6) appeared in June 2025.

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