The addition of Lisha, played by Emma Roth, continues the series' established practice of introducing new original characters into the ensemble without changing any prior canon figures or source material. This casting choice remains incidental to the mystery-adventure format rather than a central focus. The single episode titled "Weil ich ein Mädchen bin" raises a light gender-related personal issue for one character, yet the season's core storytelling stays fixed on teamwork, case resolution, and everyday kid problems.

No creator statements indicate activist intent, and the premise avoids systemic critiques or identity politics. The result is a traditional children's mystery series with minimal thematic deviation from its long-running formula.