Exclusive Sneak Peek! Niecy Nash Guest Stars on 'Brooklyn Nine-Nine'

"Extra" has an exclusive clip from tonight’s "Brooklyn Nine-Nine"!

In the episode titled "The Cruise," Niecy Nash guest stars as Captain Holt’s sister Debbie. Watch!

The episode will also follow Jake and Amy's first real vacation together. Too bad Amy’s perfectly planned cruise ship itinerary is thwarted when they discover an old adversary is aboard. Meanwhile, Gina and Terry help Captain Holt survive his visit from Debbie, while Charles and Rosa vie for the same apartment.

Watch "Brooklyn Nine-Nine" tonight at 9 PM on FOX.