Grace and Frankie decide to go back to work. Robert and Sol have an awkward dinner party for their children.

It’s Midge’s first day at her new job. Anybody know The Caisson Song?

Midge’s mouth gets her in trouble at work and Abe obsesses over a mistake.

Midge worries about her future while Susie has a light-bulb moment.

Susie hones her managerial style. Rose’s professional skills land her an incredible opportunity. Midge and Susie take advantage of some high society perks.

It’s Christmas in New York! Liza must attend a party with Caitlin and her ex-husband, Kelsey finds herself caught up in a web of her own making as she struggles…

After the holidays, Liza adjusts to a new normal as she and Charles take their relationship to the next level. Maggie hears some hard truths from an ex, and Kelsey…

Liza faces complications on the “Marriage Vacation” book tour. Kelsey and Zane head to Washington, D.C., to court a speechwriter’s prospective memoir.

Liza worries about her daughter’s online activities, Kelsey’s relationship with Jake crosses a professional boundary, and Josh contemplates a long-term decision.

Kelsey is torn between Jake and Zane, Liza helps Charles retrieve an eccentric rock star’s manuscript, and Diana ventures to Staten Island.

Frank is put in danger when his dinner companion, mob lawyer Angelo Gallo, is shot; Danny is a juror in a murder trial.

Stone works to uncover information about the crime.

The scientists and the Army battle for control of the bomb.

The hunt for a Soviet spy turns deadly.

As the project falters, Charlie turns to an unlikely partner for help.

Days before the world’s first nuclear explosion, everyone races to secure their place in history.

A new era is ushered in with the first test of an atomic weapon.

Oppenheimer puts Charlie in a precarious position.

After much deliberation, Dan decides to gather Serena, Blair, Nate, Chuck, Rufus and Lily to reveal the truth about his book in the hope that they will support him at…

In the midst of celebrating Yom Kippur with family and friends, Blair and Louis find themselves in a power struggle with Louis’ family. Serena’s boss puts Serena in the awkward…