When an unstable detective (guest star Jason Mantzoukas) returns to the Nine-Nine after years undercover, Jake doesn’t know what to make of him. Meanwhile, Charles’ rebellious behavior pits him against the precinct’s custodian, and Holt enlists Gina’s help in directing a “fun and informational” video starring himself and Rosa in the all-new “Adrian Pimento” episode of BROOKLYN NINE-NINE airing Tuesday, February 23rd on FOX.