GrimmSupernatural monster hunting season is over. NBC has quietly canceled "Grimm" after the upcoming sixth season.

The network buried the announcement in an announcement of midseason premiere dates. "Grimm" season 6, which was shortened to 13 episodes, will debut January 6. It seems the showrunners sensed a possible cancellation, since the two-part season 5 finale was titled "The Beginning of the End."

"Grimm" is actually NBC's second longest-running series after "Law & Order: SVU," which is on its 18th season. The network touted a major battle between Nick Burkhardt (David Giuntoli) and his foe, Capt. Sean Renard (Sasha Roiz), now the mayor-elect of Portland.

"Renard has the power right now so we're definitely a band on the run," Giuntoli told EnStarz. "We can't hang out in our normal haunts, either. We can't go to the precinct, we can't go to the loft, and we can't go to Monroe and Rosalee's place. We spend a lot of time in the rabbit warren, which are the tunnels."

NBC also announced the premiere dates for "The New Celebrity Apprentice" with Arnold Schwarzenegger (Jan. 2) the Wizard of Oz-inspired drama "Emerald City" (Jan. 6).

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