When New York City experiences a major blackout, cops scramble to contain the resulting chaos, and Frank uncovers some unpleasant truths about his department in the aftermath.
An infant's doctor is suspiciously murdered while J.C. and Eddie are investigating a baby's emergency room death.
When Sipowicz's estranged son, Andy Jr., shows up and announces his engagement, Andy Sr. decides to look into the bride-to-be's background. "Lou the Werewolf" shows up at the stationhouse begging to be locked up before the next full moon.
A couple visiting their daughter in Bushwick embraces their urban surroundings while dealing with a less-than-ideal rental that comes with an unwelcome roommate. The Guy delivers to Brenna and Molly's all-female, politically-minded meetup, where things get dramatic fast.
Moreno and McNamara infiltrate a major corporation to find the killer of a racist executive; J.C. sees G's French teacher again.