PopeWatch finds this incident from 2013 absolutely chilling:
The first step of Müller’s Calvary was a disconcerting episode in the middle of 2013. The cardinal was celebrating Mass in the church attached to the congregation palace, for a group of German students and scholars. His secretary joined him at the altar: “The pope wants to speak to you.” “Did you tell him I am celebrating Mass?” asked Müller. “Yes,” said the secretary, “but he says he does not mind—he wants to talk to you all the same.” The cardinal went to the sacristy. The pope, in a very bad mood, gave him some orders and a dossier concerning one of his friends, a cardinal. (This is a very delicate matter. I have sought an explanation of this incident from the official channels. Until the explanation comes, if it ever comes, I cannot give further details.) Obviously, Mūller was flabbergasted.
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