Get to know the BAU's new agent
Alan gets creative with a gift for Lyndsey when he's ashamed that he can't afford an expensive present.
Charlie and Courtney split up, and a depressed Charlie seeks solace from his psychiatrist, Dr. Freeman.
Alan becomes paranoid when Charlie and Lyndsey start to become friends.
Charlie can't get over Rose being married, and he begins to stalk her; and Alan is worried when Jake and Eldridge make videos of each other performing dangerous stunts.
Charlie and Rose's affair continues while Alan's chiropractic business turns shady.
Alan learns Rose's secret when he meets her "husband," and Rose uncovers Alan's Ponzi scheme. Meanwhile, Charlie scrambles to find time to be alone with Rose.
In Part 1 of a two-part ninth-season opener, Ashton Kutcher joins the cast as brokenhearted billionaire Walden Schmidt.
In the conclusion of a two-part ninth-season opener, Judy Greer joins the cast as Bridget, Walden's ex-wife.
Alan has trouble accepting Lyndsey's seedy movie past, and Walden tries to cheer him up by throwing a party.
Walden receives divorce papers, but then he meets a woman who looks just like Bridget.
Jake develops a crush on his Japanese tutor, and his tutor has a crush on Walden. Meanwhile, Alan is fascinated by Charlie's journal, which Charlie left to him.
Walden redecorates, and the change unsettles Alan as it prompts him to think of losing Charlie.
Alan comes home from the hospital and encounters a series of daunting challenges.
Walden likes a British woman, but both Walden and the woman doubt that he's ready to date yet.
Bridget reappears just as Walden is romancing a new love interest.
Walden's ex-wife and mother try to take control of his company, so he turns to Alan for help.
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