I should also think about the audience. If they're new to the show, a comparison between the first and third season would help them understand character arc development. For long-time viewers, the focus might be on nuanced changes and the dubbing's impact on their rewatch experience.

Make sure to mention both the strengths and any potential issues with the dubbed versions. Perhaps the first season's dub is more faithful, while the third season's dub takes creative liberties. Or maybe there's a cultural adaptation that enhances the story's relatability in Portuguese.

I should outline the key points of each season. For season 1, focus on the introduction of the characters and the supernatural elements. Then, for season 3, discuss how the storytelling has evolved, perhaps more complex cases or character development. Highlight the differences between the two seasons, both in plot and in the dubbed version's presentation.