Despite unsteady ratings, "Grimm" reached a milestone when it aired its 100th episode during the season 5 run. As promised, the mystery behind the keys has been revealed, but its true power has not been uncovered yet.

The show is renewed with a shortened season 6, and with a few episodes and many more stories to tell, executive producers David Greenwalt and James Kouf shared their thoughts on how the miraculous stick could affect season 3.

The keys formed together to create a map that points to a treasure that turned out to be a stick. Through Monroe, the stick's healing power was discovered, but it comes with a warning that the gang does not know about yet. The stick has healed Eve during the fight in the finale, which seemed to have healed her Hexenbiest persona as well.

In an interview with TV Line, they were asked if Juliette has returned. Greenwalt teased, "Well, the feelings have come back." Kouf explained, "The stick opened a part of her. There are unintended consequences to the use of the stick." They further teased that the Eve and Juliette personality will continue to come out in actress Bitsie Tulloch's personality.

So far, the stick has proven to heal fatal wounds, personalities, and even protect someone from death as shown in the fight scene where Nick was unharmed by bullets. 

The executive producers were also asked about the possible resurrection of Meisner, whose death many of the viewers have mourned. Kouf revealed that the death was necessary to the story as Black Claw has successfully tricked Nick and the gang to leave Hadrian's Wall unguarded. Aside from the fans loving the character, they also enjoyed working with actor Damien Puckler. On the possibility of his return, Greenwalt said, "We don't know how, but we would hope that he's not gone forever."

The season ended with the death of Bonaparte as Nick and Sean looks on. It was Diana's manipulation that caused her father to kill the Black Claw leader. She is expected to be one of Nick's biggest opponents moving forward as she has shown how much she wants to see her parents together.

Other things fans look forward to is Rosalee's pregnancy and the revelation of Kelly's power. "Grimm" season 6 has no official premiere date yet.