
Fever
urban fantasy
Series · paranormal romance
The Highlander series by Karen Marie Moning has 8 books and is best read in publication order, starting with Beyond the Highland Mist (1999).
Start here: Beyond the Highland Mist (1999) — then read straight through in publication order.

The order the books were released — the default way to read the series.
Before she sent MacKayla Lane to Dublin, Karen Marie Moning made her name with this run of Scottish time-travel romances. Each novel pairs a modern or otherwise displaced heroine with a formidable Highland warrior -- often centuries out of his own time, cursed, immortal, or bound by ancient Fae magic -- and works through the culture clash and slow-burning attraction that follows. Beyond the Highland Mist opens the series by flinging a stubborn, practical-minded woman back to 16th-century Scotland and into the orbit of a legendary, hot-tempered laird; later books widen the cast and the mythology, introducing the Tuatha De Danaan, the shape-shifting druid Adam Black, and a recurring cursed-immortal figure (Circenn Brodie, then Cian, then Christopian MacKeltar) who anchors several installments.
Moning builds the same interests that define her later work: Celtic myth and folklore, a dangerous and morally ambiguous Fae world sitting just alongside the human one, and heroines who start out overwhelmed and end up transformed by what they learn. The books are loosely connected through recurring side characters and a shared Fae mythology rather than a single continuous plot, so most stand alone reasonably well, though the MacKeltar-focused later entries reward reading in order. Moning has said the series' world quietly underpins the Fae mythology she later expanded in the Fever series -- readers who love Barrons and the Unseelie princes will recognize where some of that darkness started.
Publication order, starting with Beyond the Highland Mist, is the standard way in. The first five books share a loose continuity of recurring characters (Adam Black, Circenn Brodie, Drustan and Christopher MacKeltar) and are best read in order. The Immortal Highlander introduces Cian MacKeltar and marks a slight shift toward denser Fae mythology; Spell of the Highlander and Into the Dreaming follow directly from it and from each other, so keep those three together at the end. Because each novel is a mostly self-contained romance, a reader who only wants one or two entries can pick almost any book without much confusion -- but for the connective tissue (and the version of the Fae mythology that eventually feeds into the Fever series), publication order is worth following straight through.
Eight novels, from Beyond the Highland Mist (1999) to Into the Dreaming (2006).
Publication order, starting with Beyond the Highland Mist. Most books stand alone as individual romances, but the later entries -- The Immortal Highlander, Spell of the Highlander, and Into the Dreaming -- follow the same characters in sequence.
Not directly through plot or characters, but they share the same underlying Fae mythology -- Moning has described the Highlander books as building the world that the Fever series later darkens and expands.
Yes. It ran for eight books between 1999 and 2006 and Moning has not added to it since; her subsequent work moved to the Fever series and, more recently, the standalone Watch Hill Trilogy.
No. They're not required reading -- the Fever series stands completely on its own -- but fans of Fever's Fae mythology often enjoy going back to see its earlier, gentler form.
Reading order last verified .