Crowbone

Unlike the previous four volumes in the Oathsworn series, the story of Crowbone now revolves around 17-year-old Olaf "Crowbone" Tryggvason, already an experienced warrior, but also kin of late King Harald Fairhair and true heir to the throne of Norway. (As a result, the story can be followed without having read the previous four books.) A dying monk passes on a secret which puts Crowbone and the Oathsworn into harsher conflict with his enemies Gunnhild, the Witch Mother of Kings, and her son Gudrod, to determine the kingdom's future.[3][4]

The book was well received. David Maclaine's review[5] says Crowbone "... takes the reader from stormy shipwreck to pitched battle, all with a feel of vivid reality. Low’s writing continues to impress with its richness and power. His story-telling remains uncompromising in its treatment of the harsh, violent lives of men who earn their fame and fortune with blows of a battle ax." He ranks this and the rest of the Oathsworn series among "the 45 best historical novels set in the Viking Age",[6] and notes that author and historian Harry Sidebottom also called this series "the best of the Viking novels".[7] Historical novelist Carla Nayland's review calls Crowbone "a blood-and-thunder adventure full of action and violence. ... Gripping, violent action-adventure...".[8] Historical novelist Simon ("S.J.A.") Turney writes: "Quite simply, Crowbone is now my favourite Oathsworn book. It grabs the reader by the eyeballs and drags them headlong through the action. ... Crowbone maintains the power and the authenticity of the first four Oathsworn books, but throws in new elements and a fresh, 'headlong rush' feel. It is at the same time a wonderful continuation and a bright departure. It is simply a great read."[9] Writer and editor[10] Nick Rennison in the Sunday Times says, "Gore and guts fill the pages of Crowbone... but they're also filled with the kind of muscular, fast-moving prose that gives the story real depth and distinction."[11]

• Olaf Tryggvason — The historical person behind the character.
• Hnefatafl — The "Game of Kings" played in Crowbone.

• Official website
• The real Crowbone by Robert Low
• The game of Hnefatafl (nef-uh-ta-fal) — Author Robert Low explains the game that is played, and serves as a metaphor for strategies, in his novel Crowbone.