I've already guessed it could be this ending - the suspect has no dual personality, the lawyers get ripped off, and everyone gets ripped off.
But there is another possibility when you think about it - the suspect does have a dual personality, and the violent personality is more and more predominant. At the end of the film, the violent personality of the suspect Roy appears, and he is fully capable of imitating the repressed personality Aron.
So what is the ending? The director did not give an answer. But as a viewer, I wanted to give myself a single ending, and as it happened, I noticed a detail that could help me make this judgment—the pornographic tape—there was this conversation in court: the prosecution lawyer asked the prosecution lawyer’s The detective "As you can see, does the defendant like to act with his girlfriend?", the answer is "No".
Just because of this "No", I judge that the real existence of dual personalities is a more reasonable explanation.
View more about Primal Fear reviews
