Usurper by David Waine
Series: A King's Head Trilogy, Part One of A King's Head.
Approx. 91,590 words.
Published on July 23, 2012.
Callin Vorst is the youngest member of the Kingdom's second family. Convinced that his father should occupy the throne instead of the incumbent, he strikes a bargain with a creature of myth: the 'Hag'. She launches him on a career that will see him befriend the beautiful Princess Avalind and become a national hero - but at a terrible cost as the Hag exacts her price. Part 1 of A King's Head.