Late in 2015, Cardinal Pell hired PricewaterhouseCoupers to conduct a comprehensive audit of the Vatican’s finances. Beforehand, he had hired McKinsey to do a review of assets; that company found a total of €1.4 billion (about $1.6 billion) “tucked away” off the books. Other church officials, led by Cardinal Pietro Parolin, the Secretary of State, let Pell know that the audit wouldn’t happen. This was a setback for the financial overhaul that Pope Francis had charged Pell with wide authority to do a thorough job. That pope had been given the mandate to clean up the Curia, as the last pope had resigned amid allegations of “cronyism, inefficiency and corruption.” So why did Pope Francis take Parolin’s side in scrapping any audit even though that pope had given Pell the o.k. to have it done?
The full essay is at "Politics over Finance at the Vatican."
 Francis Rocca, “Vatican Finance Chief Runs into Resistance,” The Wall Street Journal, September 8, 2016.