It had to happen eventually: the Deschanel sisters – Emily and Zooey – are teaming up for an episode of the former’s Fox series, “Bones.”

Zooey, most recently seen in β€œ(500) Days of Summer,” will guest-star in β€œThe Goop on the Girl,” a special holiday-themed episode which is scheduled to air on Thursday, Dec. 10, at 8 PM. She’ll play Margaret Whitesell, a distant relative of Dr. Temperance “Bones” Brennan – that’s Emily’s character, of course – who’s discovered by Brennan’s dad, Max (Ryan O’Neal), and is invited to spend the holidays with them. All of this is going on while Brennan and Booth (the one and only David Boreanaz) are in the midst of investigating the death of a man dressed as Santa Claus who was blown up after a botched bank robbery.

Anyone want to bet on the odds of Emily and Zooey looking at each other at some point and trying to spot the family resemblance, only to have the moment end with one of them (or possibly both, in sync) saying, “I don’t see it”?