4x20 Chuck Versus the Family Volkoff
First Aired: Apr. 11, 2011 on NBC
Summary: A bad day gets worse when Sarah throws Chuck a surprising relationship curveball as the CIA orders Vivian Volkoff assassinated.
In order to prove Vivian's innocence, Chuck must put his trust in a dangerous ally - her father Alexei Volkoff.
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Guest Stars[no credits found]