This is the final book in Caiseal Mor's three part novellization of the events surrounding the early entry of Christianity into Ireland. The major protagonists continue their battle for the control of the hearts and beliefs of the population - Bishop Patricius proceeds with his underhanded and sometimes bloody attempts to convert the masses; Seginus Gallus, hated and feared by druids and royalty alike, untrusted by all but a few, lives out his punishment in apparent contrition; and the two Wanderers, Mawn and Sianan, having drunk of the Water of Life begin their immortal journey towards their destiny under the guidance of the druids Sila and Gobban. All of the protagonists are now in place for one final confrontation - or so we might expect. However, this is history and as is suggested by the role of the Wanderers themselves, no penultimate battle was ever fought. While historically accurate, this leads to an unsatisfying ending, almost as if the author didn't really know where or when to finish the story and leave the Wanderers to continue their immortal journey along the path of life.
Unfortunately, through all the trials and tribulations described, albeit in stunning details, none of the characters really evolve - something that was also lacking in the previous two books. Even Seginus Gallus, one of the more interesting characters in the series, undergoes such a complete reversal of character that is not as much evolution as the synthesis of a completely new person. However, this final volume does have significant merits - one of the great delights of the entire series is the author's ability to weave the beliefs and legends of ancient Eirinn into a rich portrayal of life in these uncertain and changing times.