The mysterious Henrietta delivers the "disturbing news" that Juliette's condition is permanent and her power is far greater than a standard Hexenbiest.

While initially horrified by her "rotting corpse" appearance, Juliette begins to see the "benefits" of being able to defend herself after years of being victimized. Conclusion Grimm Season 4 Episode 12 Review: Marechaussee

The Council operates as a shadow government, maintaining order through fear and assassination. This creates a friction with Nick Burkhardt’s role; while Nick represents human legal authority, the Council sees him as an "obstruction" to their ancient methods.

The titular " Maréchaussée " refers to the ancient Wesen Council hitman—a named Jonathon Wilde—sent to Portland to execute Wesen who violate the Council’s laws.