The Exile is alternate-history Irish-flavoured Christian science fiction and is the sequel to The Peace and The Friends (Volumes One and Two of The Interregnum).

The Exile recounts Day MacAllister's return from exile on Tirdia and subsequent involvement with The Friends, the life of Sheana A'Kildare/O'Toole to her arrival at Tara, Lady Karina's second escape from prison and subsequent life at Tara, and the six months of Lady Mara's life from departing Lagos to the day she entered Tara's court, including the obscure but critically important Afghan expeditionary campaign, whose true nature has only now been declassified.

The Exile also recounts the exploits of Kilkarney's famous class of 1989, some of whose members became almost as well-known as those of the class of 1968.

Events of The Exile play out on Hibernia at Tara, Kilkarney, Moody, Prison City, and in Afghanistan, as well as on the west Coast of British Columbia, Canada (Tirdia).