: How the crimes of parents or ancestors echo through time to affect the living.

: Lappeenranta, Finland, near the Russian border. The cold, stark landscapes reflect the emotional isolation of the characters.

If you are looking to dive deeper into this specific case or the series as a whole, you can find it on major platforms: : Available on Netflix in most regions. Finnish Broadcasting : Originally aired on Yle Areena.

This specific story arc highlights the core philosophy of the series:

: A body is found inside a wall during a renovation of a historic building in Lappeenranta.

: As Sorjonen and the SECU (Serious Crime Unit) investigate, they uncover a web of secrets involving local power players and long-buried family traumas.

: Uses muted tones and sharp contrasts to emphasize the "stains" (physical and metaphorical) mentioned in the title. 📺 How to Watch