Watch Brooklyn Nine-Nine Season 2 Episode 5 online to find out what happens when information is being leaked at the precinct.

Jake has made the mistake of not returning some files he took home a while ago, and he tries to get them back to the precinct before anyone finds out. He's caught by internal affairs, though, and told he will be suspended. Jake works with Captain Holt to figure out who the mole could be. But can they figure it out before Jake is suspended? Or is Jake really the mole?

And in an effort to get the files back from his old apartment, Jake and Amy catch Charles and Gina sleeping together. And boy are they surprised. How will this affect Jake and Charles' friendship? And how serious is the relationship between Charles and Gina (if at all?). By the end of the episode, these answers are revealed.

There's also trouble with the drug task force, leaving Terry and Rose with no leads. But their undercover investigation at a silent disco might get them close to learning some new information. And thanks to Terry's concern about where a drug dealer went to pre-school, they may just have a new lead.