John, the Long Arm, leads a life as a bounty hunter at the Three Heads. His name has spread far and wide across the north while plenty of gold weighs down his pockets. Just when everything seems to be going well for him, a group of soldiers order him to take on a new mission.

This time, his task is to track down a very dangerous man-a knight who rejected his oaths, turning his back on Gaeldeath and its ruler.

Will John choose the way of honour and devotion or will be succumb to his unquenchable thirst for wealth?

As part of "The Dance of Light" series, "The Knight of the Moon" is a novella which takes place seventeen years preceding the events of "The Return of the Knights."