An ex-con that Sipowicz put away a year ago approaches him and tells him about a prisoner who's been serving time for a crime he didn't commit and he and Simone decide to reopen the case. Meanwhile, Martinez wins the election by just three votes, much to Gotelli's chagrin. Simone comes across Detective Nick Savino who helps him with the investigation of the murder in his building and Savino suspects Henry has something to do with it. Fancy gets a cavity filling which makes him more edgy than usual and Medavoy loses one pound more than Sipowicz. Also, Russell still has not come to any conclusion about her relationship with Simone.

Simone and Sipowicz investigate the murder of two roommates. Meanwhile, Medavoy investigates a story from an old friend about a man wanting to hire a hit man for a job, and he recruits Martinez for the part of playing the hit man so they can catch the crime in the act. Kirkendall and Russell investigate the claim of a wealthy woman that her maid did not accidentally donate the diamond that the woman kept in a safe place disguised as a soup can.