The fourth season of the Americantelevision comedy series Rules of Engagement premiered as a mid-season entry on March 1, 2010, and concluded on May 24, 2010. It consists of 13 episodes, each running approximately 22 minutes in length. CBS broadcast the fourth season on Mondays at 8:30 pm in the United States between How I Met Your Mother and Two and a Half Men.
Jeff takes Russell's advice and flirts back with a female colleague (Virginia Williams) only to discover that she is open to having an affair with him. Meanwhile, Russell sends Timmy to retrieve his phone from the apartment of a one night stand (Amanda Baker).
When Jeff and Audrey switch sides of the bed, Jeff accidentally rolls over and clocks Audrey in the face, landing her in the hospital, and leading to a big misunderstanding. Meanwhile, Adam tries to get his upstairs neighbor (Skyler Stone) to stop playing his guitar so loudly, and Timmy shares his harrowing experiences working as Russel's assistant with other assistants (Luke Diliberto, Lara Everly, Kurt David Anderson, and Ary Katz) he encounters.
Featuring Christopher Carroll (doctor), Marsha Clark (social worker), Keith Pillow (hospital administrator).
Audrey tries to make Jeff feel guilty for not telling her that his friend's bachelor party in Atlantic City was cancelled - and going anyway; however, her plan backfires when Jeff discovers that Audrey is also being deceitful about her weekend.
Featuring Jeff Clarke as Chuck, and Matt Levin as the blackjack dealer.
Audrey is upset when Jeff reveals to her that he doesn't believe she saw her dead grandmother's ghost. After a break-in, Adam and Jennifer realize they have nothing worth stealing. Meanwhile, Russell tries to persuade Timmy not to go through with his arranged marriage to Sunitha (guest star Nazneen Contractor).
Audrey wants her and Jeff to see a couples therapist (Alan Ruck); unbeknownst to Audrey, Jeff only agrees when he thinks it will lead to more sex. Meanwhile, Adam enlists Timmy's help to try to take an engagement photo that doesn't make him look gay, and Russell develops a crush on Timmy's fiance, Sunitha.
Audrey's lies to her homely friend, Liz (guest star Wendi McLendon-Covey), that she is on Jeff's list of women he'd sleep with if Audrey wasn't around, putting Jeff in an awkward situation. Meanwhile, Adam tries to hide his snacks from a dieting Jennifer, and Timmy introduces Russell to charity work.
Audrey is surprised by Jeff's sudden interest in her favorite reality show, until she discovers the reason. Meanwhile, to Russell's delight, Timmy has second thoughts about his impending arranged marriage.
Guest starring Nazneen Contractor as Sunitha. Featuring Eli Jane as Lacey, and Andrew Thacher as Jerry Waldman.
When Audrey's weekly girls' night out gets cancelled, Jeff tries to get her out of the house to reclaim his "free night"; however, his plans get foiled every step of the way. Meanwhile, Russell discovers that Timmy has a lot of pent-up aggression toward him, so he introduces Timmy to a successful former assistant, Maynard (guest star Marcus Toji).
Jeff spends the evening trying to avoid learning the score of a N.Y. Rangers game after Audrey forces him to give up his tickets and go to her boss' party instead. Meanwhile, at the game, Russell is mortified when Timmy openly roots against the home team; Adam lucks into the perfect birthday gift for Jennifer.
An overly enthusiastic Audrey pushes it too far with a surrogate mother (guest star Jaime Pressly as Pam) who she and Jeff are considering paying to have their baby. Meanwhile, Russell shamelessly pokes fun at Jennifer and Adam's wedding web site, leading to Jennifer blackmailing Russell - with Timmy's help.
Audrey attends her high school reunion in Nebraska, intent on proving to her former classmates how great her life is in New York City. But things don't go as planned. Meanwhile, Russell ruins Timmy's dinner party after finding out he was not invited.
Featuring Kevin Berntson as Bob (Audrey's high school boyfriend), Laura McLauchlin (as Bob's wife Ellen), Andrew Lukich as Matt, Mary K. DeVault as Lisa, Missy Doty as Cheryl; Maitland McConnell as Sarah (Timmy's date).
A new employee (Travis Schuldt) with an axe to grind against Audrey files a sexual harassment claim against her. Meanwhile, after being teased for playing cricket, Timmy challenges Jeff to a game to prove the sport is not for wimps.
Adam and Jennifer plan a secret wedding, inviting only Jeff & Audrey (who think they are just going out to dinner with them); however, a series of unfortunate events puts Adam & Jen's plans in jeopardy. Meanwhile, to keep Russell and Timmy from finding out about the ceremony, Adam tells them he is staging an intervention for Jeff.
Note: The events in episode 1 of season five ("Surro-gate") take place in the immediate aftermath of the events in episode 10 of season four ("The Surrogate"), with the events in episodes 11, 12 and 13 of season four taking place outside of the story line of "The Surrogate" and "Surro-gate."
