Chuck Versus the Family Volkoff
"Chuck Versus the Family Volkoff" is the 20th episode of the fourth season of Chuck, and the 74th overall episode of the series. The episode was directed by Robert Duncan McNeill and written by Nicholas Wootton and Amanda Kate Shuman. It originally aired April 11, 2011. The episode has several unrelated sub-plots. In the episode, Sarah Walker throws Chuck Bartowski 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 – Vivian's father Alexei. Meanwhile, Ellie Bartowski-Woodcomb suspects that her mother Mary is interfering with the search into her father Stephen's past. "Chuck Versus the Family Volkoff" received positive reviews from critics. However, the episode continued Chuck's steady decline in viewership, drawing 4.03 million viewers, a series low. According to the Nielsen ratings system, it had a 2.5/4 share among all households and 1.3/4 share among those aged 18–49.