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This is part four of Inq’s series on George Pell and the Catholic Church. Read part one herepart two here and part three here.

What to believe? What not to believe? That's a central question confronting juries, prosecutors, police, the media -- anyone trying to work out what is credible when it comes to cases of historic child sex abuse.

It's also been the focus of an Inq series on the legacy of the George Pell years -- or, more exactly, a small part of a vast legacy which includes broken trust and the betrayal of faith over decades that has destroyed countless lives.