Here's Lucy
With Viv As a Friend, Who Needs an Enemy? (4x23)
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Viv shows up for a surprise visit, and tells Lucy she may stay in California for a year, but everything goes awry when Harry fires Lucy and hires Viv in her place, making Lucy furious. After a few weeks, Harry can't stand Viv and Viv can't stand Harry. Lucy comes up with a scheme to get Viv to quit, but Kim blabs the whole thing to Viv.