How much did Pope Francis know about Fr Marko Rupnik?

At a press conference in Rome last week, an ex-nun claiming to have suffered ritual sex abuse at the hands of Fr Marko Rupnik turned the heat on Pope Francis. How much did he know about the stomach-turning charges levelled at the Slovenian mosaic artist, who was a Jesuit until he was thrown out of the order? And, more important, when did he know? Why is Rupnik still a priest? The Pope's allies in the media are desperate for this story to go away. But, as this episode of Holy Smoke argues, the scandal is growing and threatens to engulf Francis himself.