Possibly the circumstances of the Azores case had a deeper psychological impact on him than he would ever admit in his book. In that event, the team were able to prove that a terrible crime had been committed, despite the attempted cover-up by Mariana's parents, because there was a body.
"At the time of the confessions, the man described the scene for us in a very cold way, factually, showing not the slightest regret. I had to leave my colleague to continue the interrogation alone. I was so upset. How could a father come to kill his own child? I had to get a grip on myself, I had experienced such things before.....I needed all my composure if I wanted to continue the investigation with the required objectivity. Truth and justice, that's all that remains for these children".
Do you not think after the Azores, then the Ciprianos, it was a case of déjà vu for Amaral when Madeleine was reported missing/abducted, hence his bias?
Or was it something much darker?