At the heart of that system is the Vatican's own bank, the Institute of Religious Works (IOR).
Filmmakers Alessandro Righi and Emanuele Piano have been examining this latest chapter in the history of a notoriously secretive organisation.
This episode of People & Power can be seen from Wednesday, April 27, at the following times GMT: Wednesday: 2230; Thursday: 0930; Friday: 0330; Saturday: 1630; Sunday: 2230; Monday: 0930.
