Ruins of the “French Church” in Waterford, Ireland.

Looking out from Castle Annaghs in Waterford, Ireland.

A long-dead witch drags your nephew and two friends into the Otherworld and it’s your fault. Trying to rescue them, you open the door for an ancient terror to step into the modern world.

This is the situation Professor Sean O’Neill finds himself in.

Returning from an academic conference in Prague, Professor Sean O’Neill of the University College, Dublin discovers that his nephew and two friends have been seized by a long-dead witch and taken to the Otherworld while performing a magical rite at Sean’s request to stop an otherwise indestructible Irish vampire-woman. Attempting to rescue the boys, Sean and a graduate student from the UCD Department of Folklore open the door for an ancient terror to step out of Ireland’s past and into the modern world. How can they stop this monster? Only by releasing that same indestructible Irish vampire-woman, the Dearg-due, from her grave.