When DC Parlov returns to the precinct to report his latest manuscript being stolen, Terry, Jake and Rosa go undercover at a fantasy convention to catch the culprit.
Holt owes Seamus Murphy a favor, so the precinct searches for a loophole that will allow the captain to keep his end of the bargain without breaking the law.
After a threat from Murphy, Holt stashes his husband, Kevin, in a safe house with Jake. Rosa goes undercover at a salon. Scully reveals an actual skill.
Charles plans a scavenger hunt for Jake's bachelor party; Amy's bachelorette party escalates when it's discovered she once slept with a member of her soon-to-be wedding band.
Rosa and Amy track down a killer who's managed to elude them for seven years; Terry helps Jake with his wedding chores; Holt and his rival try to convince each other to resign from the campaign for Commissioner.
