The foundation of Westminster Abbey rests upon what was once an island - an island that was holy to the Celts and the Romans long before the first Christian Church was built upon it in the eighth century. The church is now home to a community of dead monarchs, nobles, scientists, composers, soldiers, authors, poets and politicians buried within the Abbey. And their ghosts are all under the command of Reverend Poda-Pirudi.
But leading the dead isn't challenging enough for the good Reverend and he invites a hapless architect, Wallace Butterfield, to visit him at his office in the Triforium of Westminster Abbey with a promise to pay for some much needed work.
Butterfield, who thinks it's the offer of a lifetime, believes he is finally moving up in the world - even though the meeting is scheduled at Westminster's Triforium in the middle of the night!
Unbeknownst to the architect, a coven of absinthe-drinking witches conspires to intervene in Butterfield's strange meetings with the Reverend. They want what Butterfield has (though Butterfield doesn't know what it is) and they are willing to do anything (kidnapping, torture, even burning him at the stake) to get it.