The Real Reason Grimm Was Canceled

While NBC ultimately made the decision to cut Grimm from the schedule, showrunners James Kouf and David Greenwalt also had a say in the matter. In an interview with TV Line, the duo revealed that even though Grimm's final season featured one of the richest stories of the show's entire run, they felt like they were running out of material that would keep the show fresh. 

For that reason, they weren't even really upset by the cancelation. In fact, the creators recalled feeling panic when they thought season 6 would be renewed for 22 episodes, breathing a sigh of relief when the network only called for 13. That limited order for the final run may actually go a long way toward explaining the rich, mythology-laden final season. Networks lean on their procedural shows to tell a lot of stories every season, but some shows — particularly high-concept fantasy shows — just don't flourish under the demands of a 22-episode season.

Fortunately for the fans and everyone involved in the show's creation, Grimm got to say goodbye on a high note, with a satisfying conclusion that wrapped up the existing plotlines and put a nice cherry on top of its story. In the same TV Line article, Giuntoli said that everyone was grateful that the "rug [wasn't] pulled" out from under them, something that does happen in the cutthroat world of network television, after all.