Here is the synopsis for the Grimm season premiere:
Mike Dopud will make an appearance in next week's episode, and John Pyper-Ferguson guest stars in episode 2x03.
Elsewhere, Hank (Russell Hornsby) struggles with the shocking truths he’s recently seen and Captain Renard (Sasha Roiz) deals with unexpected family issues when his estranged brother (guest star James Frain) comes back into his life. Reggie Lee also stars.
Grimm will air Mondays at 10 until Friday, September 14, when it moves back to its old slot, Fridays at 9. Collider has a pretty good overview of things to look forward to this season. Here is a preview with the cast: