Revenge for the Bastard

Robin is imprisoned for murder (again) and trapped in the human realm where, after a military coup, the army plan to destroy Tir na nÓg. But the fae realm is destabilising. Keir may have instigated the rebellion but he’s now on the run. Filidea is discredited and unable to stop Oisin’s trial and execution.
In the final part of the trilogy, the centuries-long feud between humans and fae is about to descend into war. The flashpoint is a castle on a hill, which holds an ancient secret. If it could be found, people might not die. But time is running out.
Unless someone is willing to risk his life to protect others, one last time.