A medieval pilgrim harbours murderous intentions towards the King. Can Prioress Eleanor stop him before it's too late?

Prioress Eleanor of Tyndal is on a pilgrimage, looking for peace and respite, when rumours spread that King Edward is on his way, seeking God's blessing for his recent invasion of Wales. Lurking in this sacred place, however, is an assassin with murderous treason in mind. When a nun falls to her death from the priory bell tower, is it a tragic accident, or a sign of what's to come?

Although far away from the gossipy village of Tyndal, Eleanor, like a medieval Miss Marple, must use all her wit, wisdom and insight to unravel the clues to the case.

But can Eleanor expose the killer in their midst, or will she too fall victim to one who has made a covenant with hell?