@ ShiningInLuz
It is almost certainly in technical breach of judicial secrecy.
The book is supposed to be based on the files up until his departure (some of it is, some of it isn't...). Numerous people involved in the publication process would have had access to the contents more than a month prior to secrecy being lifted. Some far earlier (editor, proof-reader, etc).
A Photoshop filter can easily transform photos into looking like sketched "drawings". My comment was tongue-in-cheek that someone actually sat down and drew them by hand.
As he obviously had access to those files while he was working on the investigation, it would have been easy enough to keep or obtain a copy when he left.
On your comments here:
"Amaral fairly accurately discloses the case summary that closes the file, 3 days after the files were closed."
"How about whoever leaked the final PJ report shelving the case? So that Amaral could copy the conclusion in his book, some 3 days later."
Where does he - accurately or otherwise - summarise the legal analysis or the final PJ report? What he presents as the police report and what some people to this day continue to flog as THE police report is the first interim report - the rambling ruminations signed by Tavares de Almeida written before he left.
If he had accurately summarised the legal report, i.e., that the initial suspicions were NOT confirmed, and that there was no evidence of a crime committed by any of the arguidos, he probably wouldn't have been sued.
That said, I find the technical breach over the book relatively unimportant in the scheme of things and deflects from the far greater issue of the leaky cauldron that was the entire investigation while under his command.
He may not have been personally involved leaking (whether all or any of the garbled half-myths), but if he hadn't approved of what was happening under his nose, he would have stopped it. He didn't.