The Goop on the Girl

"The Goop on the Girl" is the third and final Christmas episode of Bones, aired in the show's fifth season.

Synopsis
Booth and Brennan investigate the case of a man in a Santa Claus costume who tried to rob a bank but was blown up in the process. Meanwhile, Brennan's father, Max, asks Margaret, a distant relative of Brennan's, to spend Christmas with him and Brennan.