Nathan Fillion to Guest Star on ‘Brooklyn Nine-Nine’

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Nathan Fillion will be guest starring on Brooklyn Nine-Nine! 

Nathan Fillion is getting meta with his next TV gig.

The Castle vet will guest-star on Fox’s Brooklyn Nine-Nine as Mark Devereaux, the star of a Law & Order-type series titled Serve & Protect, EW.com reports.

Mark thinks playing a detective on TV makes him qualified to help Jake (Andy Samberg) and Rosa (Stephanie Beatriz) investigate a crime that occurred on the set of his crime drama.

Source: TV Line