Jake: Anyways, it turns out he never worked at the Philadelphia PD.
Captain Holt: So he's a liar and a hussy? Why is he still here?
Jake: Because I started thinking, why would he lie? And the answer is: because he's a spy, planted here by Commissioner Kelly. Think about it. You've been rounding up all the captains who oppose him. Kelly wants those names. Gordon was sent here to seduce you. He's a red sparrow.
Captain Holt: You mean a honeypot.
Jake: Potato, tomato, but yes. He is the world's most boring sex spy, and he's here to infiltrate the Nine-Nine.