Exorcism and the Church Militant
Is excellent as well!
My wife got both books for about $40 off of the reverend's site.
His related book: Exorcism and the Church MilitantI concur! After hours of dialing, my kids found "Exorcism ..." for me, and I grabbed all seven copies available (I've sold six and am keeping the seventh), but try to find the book now ... it's pretty difficult. (Your wife was wise to purchase early.)
Is excellent as well!