The Warrior Lives (Book Five of The Guardians of the Flame)

Jason Cullinane's famous father Karl is thought to have died fighting members of the Slavers Guild, and Jason must now assume the full weight of the Crown – which means continuing the fight against slavery as well as presiding over the kingdom.  However, rumors come in that slavers have been found dead with notes pinned to the corpses proclaiming "The Warrior Lives" ... Is Karl Cullinane still alive?
 
Jason, along with his retinue – including the huge flying dragon Ellegon – set out in search of Karl Cullinance while continuing his father's mission to end slavery.

Library Journal recommended this "fast-moving fantasy adventure".