Chuck

In the fourth season premiere, Chuck and Morgan go on a rogue globe-spanning mission to find Chuck's mom. Meanwhile, Sarah and Casey follow a trail to Russia as they investigate the mysterious Volkoff Industries and its operative Marco (guest star Dolph Lundgren – The Expendables, Universal Soldier, Rocky IV). Back at home, Ellie delivers big news to her family. Additional guest stars include Olivia Munn (Attack of the Show!, Greek) and Harry Dean Stanton (Big Love, Repo Man, Pretty in Pink, The Green Mile).

Chuck and Sarah travel to fashion week in Milan to retrieve a high-tech secret weapon. While they are undercover, Chuck realizes what the "Achilles' heel" is in their relationship, but he must set personal issues aside for the mission. Meanwhile, Morgan recognizes a fatal flaw that compromises the new Buy More. Elsewhere, Casey struggles to put down roots in Burbank. Karolina Kurkova (The Victoria's Secret Fashion Show), Lou Ferrigno (The Incredible Hulk, The King of Queens), Isaiah Mustafa (upcoming Horrible Bosses, Madaea's Big Happy Family) and Bronson Pinchot (Perfect Strangers, Beverly Hills Cop, Step by Step) guest star.

Chuck and Sarah's romantic mission is cancelled with the arrival of Hugo Panzer (guest star Steve Austin – WWF Raw) and Heather Chandler (guest star Nicole Richie – The Simple Life). But Chuck grows more interested when the manipulative Heather claims to know a secret about his mom. Meanwhile, as Morgan prepares the Buy More for a huge video game release, he gets a surprise from Big Mike. Stacy Kiebler (WWE Smackdown!, Dancing with the Stars) also guest stars.

Chuck and Sarah work on becoming better communicators as they join Awesome and Ellie for a getaway to Costa Gravas. There, the gang is reunited with Generalissimo Goya (recurring guest star Armand Assante – Human Target, American Gangster) who, once again, finds himself in a dangerous situation. Back at home, Morgan embarks on a forbidden romance that may put him at odds with Colonel John Casey. Guest star Tia Texada (Third Watch, Huge) appears as Hortencia Goya. Recurring guest star Mekenna Melvin (Lie to Me, Three Rivers) appears as Alex.

When Colonel Casey's former team returns looking for him, Chuck must decide what he's willing to sacrifice in order to find his mom. Elsewhere, Morgan works up the nerve to reveal a potentially dangerous secret to Casey. Recurring guest star Mekenna Melvin appears as Alex. Eric Roberts (The Expendables, Less Than Perfect), Joel David Moore (Bones, Avatar, Dodgeball: A True Underdog Story) and Dave Batista (WWF Raw, WWE Smackdown!) also guest star.

When Chuck, Sarah, Casey and Morgan are tasked to stop Dr. Stanley Wheelright (guest star Robert Englund – A Nightmare on Elm Street, Freddy's Nightmares) from releasing a nightmare-inducing toxin, they're also led to question the allegiances of Chuck's mom (recurring guest star Linda Hamilton). Meanwhile, Jeff and Lester use their unique sensibilities to celebrate Halloween at the Buy More, and Ellie and Awesome get a visit from Dr. Honey Woodcomb (recurring guest star Morgan Fairchild – Fashion House, Friends, Falcon Crest).