Back in the 1990's I used to pick up some Malachi Martin works on occasion. He provides insider information about the Jesuits and the Vatican and while I've never agreed with him, I've always found him to be interesting.
I stumbled on his 1984 work 'Rich Church, Poor Church' in a pile of discount books and since it was only $1.50, I decided to pick it up. It was a work I had never encountered before.