With King Duncan defeated, Gruoch becomes Queen of Scotland. Now she must rule at Macbeth's side, a difficult prospect as the new King of Scots grows increasingly unstable. To keep her son, her love, and her country safe, Gruoch must call upon the dark spirits of the ancient Celtic goddesses to guide her.

Dive into the final installment of Lady Macbeth's epic tale in Highland Queen, a Scottish historical fantasy, book 4 in The Celtic Blood Series by New York Times bestselling author Melanie Karsak.

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The complete Celtic Blood series:

Highland Raven
Highland Blood
Highland Vengeance
Highland Queen