I suspect the fact that blood was found was enough. Although we can't even be sure of that.
Enough for Amaral and Cristovao, but it shoukldn't have been enough for any self respecting Court. Why didn't Leonors lawyer, Joao Grade question that ? Why didn't he demand that the blood be properly tested ? It could even have been none human, such as pigs blood.
Why didn't Grade question that Leonor and Joao Cipriano had killed Joana based upon Amarals assertion that she had come across them having sex together. Nobody saw it....... No proof of that.
Why didn't Grade question Amarals assertion that Joana had been cut up and fed to the pigs. Nobody saw it....... No proof of that.
Why didn't Grade make more fuss about the Torturing of Leonor?
Why didn't Grade challenge ? ........................ I could go on
In fact, why was Joao Grade allowed in that Court after being found carrying drugs into prison ? Amaral was, of course, the head druugs cop in the Algarve region. Was he the one who let Grade off being charged fior that?
And Joao Grade and Amaral were buddies. Grade attended Amarals ?50th birthday bash and according to the media offered to train Amaral as a Lawyer.
Now was that a "CONFLICT OF INTERESTS " or not ?
I make absolutely no accusations, but think people should be aware of these things to weigh it up in their own minds
No wonder that one of the three judges refused to acknowledge the verdict.