: Terry Jeffords, Charles Boyle, and Captain Holt use different "parenting" styles to resolve a petty dispute between Hitchcock and Scully .
: The episode sets up a major series arc when it is revealed that Hawkins is actually a dirty cop who is robbing the banks herself. Subplots & Comedy [S4E20] The Slaughterhouse
Jake Peralta and Rosa Diaz compete to join a prestigious task force called , led by their idol, Lieutenant Melanie Hawkins (guest star Gina Gershon ). : Terry Jeffords, Charles Boyle, and Captain Holt
: A comedic side-plot involves Captain Holt losing Amy Santiago's favorite fountain pen while his own is being repaired in Germany. : Terry Jeffords