I am sorry Eleanor, but he has shown himself to be a liar. He is a convicted perjurer FGS.
And look at the so called evidence in the Joana case. There is none IMO, yet it comes from him that
1) Leonor and Joao were having top level hanky panky when Joana saw them so they killed her
2) Leonor threw herself down the stairs when IMO it was untrue
3) Joanas blood was in the fridge, when it was never tested and could even have been pigs blood
4) Joanas body was chopped up into small pieces,and fed to the pigs. No evidence of that
No matter what you think of Amaral, his theories as to what befell Joana Cipriano are based on his direct personal knowledge of the case. He didn't invent the 'fed her to the pigs story', that came from the mouth of the self-confessed killer himself.
What I cannot understand though is this continual attempt to paint the mother, Leonor Cipriano, as some sort of victim when this couldn't be further from the truth. At best Leonor was complicit in the coverup following the murder of her daughter and at worst she was there when it happened but did nothing to save her. Either way, the woman is a disgrace.