A recurring mystery involves symbols appearing on cloth that are tied to mirrors acting as gateways to a dark, prehistoric-like world.
The season finally explores the true power and ancient history of the "magic stick" found in the Black Forest, which is revealed to be a piece of a much larger, world-ending artifact. Grimm Season 6
Unlike previous 22-episode seasons, Season 6 was trimmed to just 13 episodes , leading to a faster-paced narrative and a final battle that takes place over the course of just a few days. A recurring mystery involves symbols appearing on cloth