VIDEO: Andy Samberg Warns BROOKLYN NINE-NINE Finale Shocker

The cast of "Brooklyn Nine-Nine" send out a season finale warning -- buckle up! The last episode is going to be a shocker! Get a sneak peek below!

In the episode, Jake's investigation of philanthropic civic leader Lucas Wint (guest star Ian Roberts) is shut down by Commissioner Podalski (guest star James M. Connor). Still determined to crack the case, Jake enlists Amy and a reluctant Captain Holt to help him uncover more evidence, even if it means facing suspension.

Meanwhile, Charles is devastated over pre-marital problems with Vivian, and Gina knows just how to cheer him up in the all-new "Charges and Specs" Season Finale episode of Brooklyn Nine-Nine airing Tuesday, March 25 (9:30-10:00 PM ET/PT) on FOX.

FOLLOW "BROOKLYN NINE-NINE" STAR CHELSEA PERETTI(@ChelseaVPeretti) AS SHE LIVE-TWEETS THE SEASON FINALE (IN EMOTICONS!) DURING THE EAST COAST BROADCAST TOMORROW AT 9:30/8:30c ON FOX!

Official Show Website: Fox.com/BrooklynNineNine

Official Show Facebook: Facebook.com/BrooklynNineNine

Official Show Twitter: @Brooklyn99FOX #brooklyn99

From Emmy Award-winning writer/producers Dan Goor and Michael Schur ("Parks and Recreation"), and starring Emmy Award winners Andy Samberg ("Saturday Night Live") and Andre Braugher ("Men of a Certain Age," "Homicide: Life on the Street"), Brooklyn Nine-Nine is a new single-camera ensemble comedy about what happens when a talented, but carefree, detective and his diverse group of colleagues get a new captain with a lot to prove.

Detective JAKE PERALTA (Samberg) is gifted enough that he's never had to work too hard or follow the rules too closely. Perhaps because he has the best arrest record among his colleagues, he's been enabled - if not indulged - throughout his entire career. That is, until the precinct gets a new commanding officer, Captain RAY HOLT (Braugher).

Captain Holt believes in rules and regulations, two concepts that have long been overlooked by the detectives in the 99th precinct. Jake's colleagues are a brilliant and capable bunch, but lack a certain level of discipline and leadership. They compete with each other, annoy each other, gossip and flirt, but at the end of the day, they have each other's backs.

As the precinct's honorary straight arrow, Detective AMY SANTIAGO (Melissa Fumero, "One Life to Live," "Gossip Girl") is thrilled with the leadership change. Having grown up with seven brothers, Amy is extremely competitive...about everything. She is hell-bent on collaring more criminals than Jake, and she's keenly aware of how many arrests she needs to close the gap. Holt's next-in-command is Sergeant TERRY JEFFORDS (Terry Crews, "Bridesmaids," "Everybody Hates Chris"), a linebacker of a man who's lost his nerve after his wife had twin baby girls - Cagney and Lacey - and he lives in fear of not seeing them grow up.

Also working cases in Brooklyn's 99th is Detective CHARLES BOYLE (Joe Lo Truglio, "Wreck-It Ralph," "Superbad"), who idolizes Jake and is the precinct's workhorse; he's not brilliant, he's not physically gifted, but he tries harder than anyone else. Charles pines for the vocally opinionated Detective ROSA DIAZ (Stephanie Beatriz, "Modern Family," "The Closer"), with whom he stands no chance at all. Rosa is simultaneously tough, sexy and scary as hell. Meddling in everyone's affairs is GINA LINETTI (Chelsea Peretti, "Parks and Recreation," "Kroll Show"), the eccentric and self-absorbed civilian office manager.

Together, they interrogate suspects, arrest perps and solve murders. But, ultimately, Brooklyn Nine-Nine is a workplace comedy that's not really about the job. It's about the men and women behind the badge - singing karaoke, grabbing a beer, and dabbling in each other's personal lives- all while protecting the fine people of Brooklyn.