Because of the geographical difference (and the fact that a number of key worldbuilding elements, including the Sull, the Old Ones, and the Endlords, weren't introduced until Sword) it isn't necessary to have read the earlier series to understand this one.

This series is set in the same world as Jones's earlier Low Fantasy trilogy The Book of Words, which takes place a generation earlier and in a different part of the continent. Endlords (TBR) note Tentative title, release date unknown.The series was put on hold for several years, but Jones has as of autumn 2017 resumed work on book five Sword of Shadows is projected to be six volumes in total when completed. Against a backdrop of internecine war among the clans, Iss's ambitions for conquest, and the looming threat of the Endlords and their minions, Raif and Ash's parallel stories will eventually intersect, and both of them will find destinies beyond what they'd dreamed of. The story follows two main characters: Raif Sevrance is a young clansman with the ability to hit any animal through the heart with his arrows, and Asarhia (or Ash, as she prefers) is the adopted daughter of Penthero Iss, creepy ruler of the city-state of Spire Vanis and a dabbler in sorcery. The Sword of Shadows is a High Fantasy series by JV Jones set in a dark, subarctic world inhabited by a loose alliance of city-states, the Clanholds, and the enigmatic Sull, which is under threat from the Endlords, a group of godlike Omnicidal Maniacs.

The Book of Words by J.V. Jones