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).
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