After the fallout from Black Monday, Dawn and Blair pursue a new deal from different directions while Mo runs from his past.

Mo has an unexpected guest. Blair and Tiff go looking for a new home.

Mo tries to extricate Keith from a difficult situation.

Blair's new political connection puts Dawn in a compromising position. Yassir and Wayne attempt to solve an office mystery.

Blair and Dawn take to the skies to pursue a new investor. Mo and Keith struggle with relocation.

A new client presents a moral quandary for Dawn. Mo, Blair, and Keith chase down leads while Tiff has an identity crisis.

At TBDs Halloween party, Blair tries to make the trade of a lifetime, Mo and Dawn argue over an opportunity, Tiff and Corkie loosen up, and Keith phones a friend.

On election night, Blair makes a risky proposition while Mo and Dawn go on a double date. Keith makes a startling discovery.

Blair is forced to revisit his past while Mo, Keith and Dawn try to make amends.

A plan comes together. Season finale.

Wide-eyed Blair is thrust into the insane world of ’80s Wall Street. Mo enacts his master plan to take over the Georgina Jeans Company.

A Hollywood screenwriter shadows Mo at the office as Mo and Dawn fight over her desire to be made a partner. Keith plays a prank on Blair.

Mo attempts to create a father/son bond with Blair. Dawn and Spencer have a lively dinner with Dawn's parents. Keith finds his secret increasingly difficult to hide.

Mo and Dawn attempt to reunite Blair and Tiff in order to keep the Georgina play afloat. Mo's debts come back to haunt him.

Mo takes Dawn to the Predator's Ball in an effort to raise the capital The Jammer Group needs to pay off their debts. Blair is saddled with a weekend work assignment.

At Blair and Tiff's engagement party, Mo's feelings for Dawn begin to cloud his judgment. Wayne and Yassir get into serious trouble, while Keith takes a big step.

Mo takes Blair on his bachelor party, while Dawn realizes she’s a very important guest at Tiff’s bachelorette party. Keith faces a loaded decision.

We get a glimpse into Mo’s past, while Blair and Dawn pursue some necessary detective work.

Mo is determined to make Blair and Tiff’s marriage happen, for better or worse. Keith tries to impede the SEC’s sting operation by any means possible.

Everything comes crashing down.