The Slaughterhouse - [s4e20]

: Despite promising not to compete, both detectives sabotage each other to impress Hawkins while pursuing a bank robber named Billy Ocampo.

Jake Peralta and Rosa Diaz compete to join a prestigious task force called , led by their idol, Lieutenant Melanie Hawkins (guest star Gina Gershon ). [S4E20] The Slaughterhouse

: Amy struggles with her fear of authority, eventually culminating in a hilarious outburst directed at Captain Holt. Key Production Details Director : Victor Nelli Jr. Air Date : May 16, 2017 : Despite promising not to compete, both detectives

: A comedic side-plot involves Captain Holt losing Amy Santiago's favorite fountain pen while his own is being repaired in Germany. : Despite promising not to compete