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.

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.

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.

Andre and Aaron are at odds when Dean Miller recruits Aaron to convince Andre and the Gammas to associate with a problematic alum.

Doug asks Andre and Aaron to put aside their differences to help him impress a restaurant critic. Aaron learns surprising news about his mentor at Cal U, while Andre attempts…

After midterms, the crew looks for new ways to alleviate their stress and decides to give mushrooms a try. Aaron gets roped into a faculty karaoke night and surprisingly learns…

Tensions are high between Zoey and Luca as they rush to design a new line for Anti-Muse after a famous fashion collaborator wants to check it out. Aaron is asked…

Melinda must help Ned stop a ghost out for revenge when the Grandview radio station broadcasts the humiliating secrets that led to his death.

Lucifer realizes that as rock star Vince Vincente, he can get his fans to do whatever he wants. Thrilled with this power, Lucifer arranges to play a secret VIP concert…

Peter gets carried away when the Nielsen people select the Griffins to have their television-viewing habits monitored and he steals a number of the Nielsen boxes in hopes of controlling…

Peter gets carried away when the Nielsen people select the Griffins to have their television-viewing habits monitored and he steals a number of the Nielsen boxes in hopes of controlling…

Carlton and Will, babe magnets. Who will be first to get a date for Hilary’s Halloween party?