Kerrigan's Follow the Old Road uncovers tantalising alternate Irelands - kingdoms of Oz to our familiar Kansas. As with her previous two travel books, there is a generous helping of history, archaeology, wildlife and folklore always with more than a hint of mystery. Questions are asked and not all are answered, making the armchair traveller long to get up and see for themselves the real places stunningly rendered in mysterious black-and-white photography by Richard Mills. How did Mills get that strange white cat to pose at the mouth of the Cave of Cats which the ancients believed was the entrance to the otherworld in Rathcroghan in Co Roscommon? This is a book to dream over . Kerrigan's cinematic approach makes me see finally how everything fits together while paradoxically opening up endless versions. There's something quite magical about this, and Follow the Old Road makes a great companion for her Old Ways, Old Secrets which conjures tales from the ground under our feet, documenting a pagan Ireland which still breathes in her pages . detailed and evocative but it is impossible to do justice to the wealth of information. Kerrigan has the rare gift of being able to transfer her own vision to the reader.

I won't be happy now until I've seen these roads for myself.