attempt to keep crime down using data-driven policing without patrol officers.

is hired as a private investigator to look into the burrito incident.

: Holt uses the data from the week—which showed that fewer officers actually led to fewer bad arrests and a safe community—to force O'Sullivan to end the strike and as a case study for future NYPD reform . Fun Fact: The Tattoo Mystery

: While gathering evidence, Boyle receives worrisome medical news regarding his biopsy results, though they are eventually revealed to be a treatable infection.

The episode ends with a teaser about . While Jake is shown a photo of a "decimal point," it is revealed that Holt paid Rosa even more to show Jake a doctored image, leaving the true nature of his ink a secret from the squad.

investigate the doctor providing the fake medical exemptions for "mono".

: Captain Holt and Amy are forced to manage the 99th with almost no uniformed staff. They eventually receive "help" from other precincts, which unfortunately consists primarily of multiple Hitchcocks and Scullys .

In this episode, the —led by the smarmy Frank O’Sullivan—stages a massive walkout of uniformed officers. The "strike" is sparked by an alleged anti-cop incident where an officer claims a restaurant put a dead mouse in his burrito , but the precinct's detectives quickly suspect the illness is a coordinated ruse. Key Storylines