When does Grimm return?

The series premiered on October 28, 2011, and ended on March 31, 2017, after six seasons consisting of 123 episodes. The narrative follows Portland homicide detective Nicholas Burkhardt (played by David Giuntoli), who discovers he is a Grimm, the latest in a line of guardians who is sworn to keep the balance between humanity and mythological creatures, known as Wesen. The series features a supporting cast with Russell Hornsby, Bitsie Tulloch, Silas Weir Mitchell, Sasha Roiz, Reggie Lee, Bree Turner, and Claire Coffee.