Book excerpt: An old gunslinger; Arden is a lost cause, the last of his kind who has butchered his way through life whilst hanging onto a promise.Thaddeus, a young man with his own agenda, resurrects him to go on his last dark adventure bound to eventually doom them all.Everyone is after the legendary Orb; the drahons, mankind and Artemis. Time is running out.Harbinger is the first in the series.