A murder investigation becomes personal for Lisbon when she learns that her underachieving younger brother, Jimmy, is being sought as a key witness.

Frankie must work at Ehlert Motors for one day in order to collect her pay on an old, uncashed paycheck, Mike offers Sue a part-time job at the quarry, and Mike’s dad attempts to persuade a lazy Axl to help replace the damaged kitchen sink.

As Agent Carter closes in on Howard Stark’s stolen technology, Peggy’s secret mission could unravel when the SSR arrests Jarvis and a secret is revealed.

After being forbidden to work with Kate Beckett or the 12th Precinct, Castle obtains a P.I. license and shows up unannounced at Beckett’s crime scene, hoping to investigate alongside her as a private eye. But things don’t go as Castle had planned.

Alicia and Frank Prady square off in a crucial debate in the race for State’s Attorney. Peter and the city of Chicago prepare for a potential riot.

Marty is back with a vengeance – ready to grow Kaan & Associates and conquer the consulting world. Revelations of what has occurred since last season begin to explain the ‘new normal’ at K&A. Marty lays down the law to a pregnant Jeannie on her future with the company, and the pod leaves one client in pursuit of a much bigger payday. .

While driving out to get breakfast, the Dunphys plus Manny have a near death experience causing everyone to reevaluate their lives. Claire resolves to be more fun and less uptight, Haley and Alex agree not to fight anymore, Manny refuses to ever ride in a car again, Luke wants to check off his bucket list, Phil decides to be a take action type of guy, and the rest of the family has to bear the brunt of all the new attitudes.

Frankie acts like a teenager when she hangs out with Pam Staggs, a former classmate who was popular in high school. Meanwhile, Brick surprises Mike by winning an athletic award; Sue pursues some odd hobbies; and Axl seeks a date with Devin Levin.

The team is brought in to consult on a botched DEA raid, but when Abbott’s former boss tries to blackmail him into keeping the agency’s missteps quiet, Abbott is forced to choose between his career and his morals.

Peggy is contacted by old acquaintance Howard Stark when he is framed for unleashing his deadliest weapons and can trust no one else. To help Peggy clear Stark’s name, he insists his butler, Edwin Jarvis, be at her beck and call–whether she likes it or not. But the risk is great: If caught, Agent Carter could be targeted as a traitor and spend the rest of her days in prison…or worse.