'Chuck' and 'Grimm' debut on Oct. 28

NBC builds two nights of Halloween-themed programming as the final season debut of "Chuck" (Fridays, 8 p.m.) and the series premiere of new drama "Grimm" (Fridays, 9 p.m.) will begin on Friday, Oct. 28. Likewise, Halloween-themed episodes of NBC's Thursday-night comedies - "Community," "Parks and Recreation," "The Office" and "Whitney" - will be telecast Oct. 27 in recognition of the holiday.

Everyone's favorite secret agent is back in the final season of the action-comedy "Chuck" as series star Zachary Levi returns as Chuck Bartowski - a regular guy who also happens to be the government's most vital secret agent.

"Grimm" is a new drama inspired by the "Grimm's Fairy Tales" and stars David Giuntoli ("Turn the Beat Around") as a Portland homicide detective who discovers that he is descended from an elite line of criminal profilers, known as "Grimms," who are charged with keeping balance between humanity and ominous mythological creatures.