Family gatherings are always awkward and reunions on Bones are no different. Tonight, we finally meet Brennan's second cousin, Margaret, played by Emily Deschanel's real life sister Zooey Deschanel, and interestingly we get to spend the holidays with the whole Jeffersonian team.
In "The Good on the Girl," the 10th episode of Bones' fifth season, Brennan's plans to spend Christmas in El Salvador are thwarted when her father (guest star Ryan O'Neal) convinces her to spend the holidays with him and newly discovered distant relative Margaret Whitesell. Unfortunately, this leads to an awkward first meeting between Brennan and Margaret, who apparently is a Benjamin Franklin expert.
Meanwhile, the team investigates the case of a man dressed as Santa Claus who blows himself up during a botched bank robbery. Booth and Brennan work to identify the bomber and determine his motives.