Assassin's Quest (The Farseer Trilogy #3)

King Shrewd is dead by the hands of his son Regal, As is Fitz - or so his enemies and friends believe. But with the help of his allies and his beast magic, he emerges from the grave, deeply scarred in body and soul. The kingdom also teeters toward ruin: Regal has plundered and abandoned the capital, while the rightful heir Prince Verity, is lost to his mad quest - perhaps to death. Olny Verity's return - or the heir his princess carries - can save the Six Duchies.
But Fitz will not wait. Driven by loss and bitter memories, he undertakes a quest: to kill Regal. The journey casts him into deep waters, as he discoverswild currents of magic within him - currents that will either drown him or make him something more than he was.

Fantasia